[NFC] Remove Python 2 imports from __future__ (#42086)

The `__future__` we relied on is now,  where the 3 specific things are
all included [since Python 3.0](https://docs.python.org/3/library/__future__.html):

* absolute_import
* print_function
* unicode_literals
* division

These import statements are no-ops and are no longer necessary.

benchmark/scripts/Benchmark_DTrace.in

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- Benchmark_DTrace.in ---------------------------------------------===//
 #

benchmark/scripts/Benchmark_Driver

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # ===--- Benchmark_Driver ------------------------------------------------===//

benchmark/scripts/Benchmark_GuardMalloc.in

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- Benchmark_GuardMalloc.in ----------------------------------------===//
 #

benchmark/scripts/Benchmark_QuickCheck.in

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- Benchmark_QuickCheck.in -----------------------------------------===//
 #

benchmark/scripts/Benchmark_RuntimeLeaksRunner.in

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- Benchmark_RuntimeLeaksRunner.in ---------------------------------===//
 #

benchmark/scripts/build_linux.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import os

benchmark/scripts/build_script_helper.py

@@ -1,6 +1,4 @@
-#!/usr/bin/env python
-
-from __future__ import print_function
+#!/usr/bin/env python3
 
 import argparse
 import os

benchmark/scripts/compare_perf_tests.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # ===--- compare_perf_tests.py -------------------------------------------===//
@@ -27,8 +27,6 @@ class `ReportFormatter` creates the test comparison report in specified format.
 
 """
 
-from __future__ import print_function
-
 import argparse
 import functools
 import re

benchmark/scripts/create_benchmark.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import os

benchmark/scripts/generate_harness/generate_harness.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- generate_harness.py ---------------------------------------------===//
 #
@@ -14,8 +14,6 @@
 
 # Generate boilerplate, CMakeLists.txt and utils/main.swift from templates.
 
-from __future__ import print_function
-
 import argparse
 import os
 import subprocess

benchmark/scripts/perf_test_driver/perf_test_driver.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- perf_test_driver.py ---------------------------------------------===//
 #
@@ -12,8 +12,6 @@
 #
 # ===---------------------------------------------------------------------===//
 
-from __future__ import print_function
-
 import functools
 import glob
 import multiprocessing

benchmark/scripts/run_smoke_bench

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # ===--- run_smoke_bench -------------------------------------------------===//
@@ -21,8 +21,6 @@
 #
 # ===---------------------------------------------------------------------===//
 
-from __future__ import print_function
-
 import argparse
 import glob
 import os

benchmark/scripts/test_Benchmark_Driver.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # ===--- test_Benchmark_Driver.py ----------------------------------------===//

benchmark/scripts/test_compare_perf_tests.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # ===--- test_compare_perf_tests.py --------------------------------------===//

benchmark/scripts/test_utils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # ===--- test_utils.py ---------------------------------------------------===//

benchmark/utils/convertToJSON.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===--- convertToJSON.py ------------------------------------------------===//
 #
@@ -57,8 +57,6 @@
 #     ]
 # }
 
-from __future__ import print_function
-
 import json
 import re
 import sys

docs/scripts/ns-html2rst

@@ -1,6 +1,4 @@
-#!/usr/bin/env python
-from __future__ import print_function
-
+#!/usr/bin/env python3
 import re
 import subprocess
 import sys

stdlib/public/core/FloatingPointTypes.swift.gyb

@@ -13,7 +13,6 @@
 import SwiftShims
 
 %{
-from __future__ import division
 from SwiftIntTypes import all_integer_types
 from SwiftFloatingPointTypes import all_floating_point_types
 

stdlib/public/core/IntegerTypes.swift.gyb

@@ -14,7 +14,6 @@
 # Utility code for later in this template
 #
 
-from __future__ import division
 from SwiftIntTypes import all_integer_types, int_max_bits, should_define_truncating_bit_pattern_init
 from SwiftFloatingPointTypes import getFtoIBounds
 

stdlib/public/core/SIMDConcreteOperations.swift.gyb

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 %{
-from __future__ import division
 from SwiftIntTypes import all_integer_types
 word_bits = int(CMAKE_SIZEOF_VOID_P) * 8
 storagescalarCounts = [2,4,8,16,32,64]

stdlib/public/core/SIMDVectorTypes.swift.gyb

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 %{
-from __future__ import division
 from SwiftIntTypes import all_integer_types
 word_bits = int(CMAKE_SIZEOF_VOID_P) * 8
 storagescalarCounts = [2,4,8,16,32,64]

test/CrossImport/Inputs/rewrite-module-triples.py

@@ -1,11 +1,9 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Renames files or directories with "module-triple-here" in their names to use
 the indicated module triples instead.
 """
 
-from __future__ import print_function
-
 import os
 import platform
 import shutil

test/Driver/Dependencies/Inputs/fake-build-for-bitcode.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # fake-build-for-bitcode.py - Fake build with -embed-bitcode -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -16,8 +16,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import sys
 

test/Driver/Dependencies/Inputs/fake-build-whole-module.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # fake-build-for-whole-module.py - Optimized fake build -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -15,8 +15,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import sys
 

test/Driver/Dependencies/Inputs/modify-non-primary-files.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # modify-non-primary-files.py - Fake build while modifying files -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -16,8 +16,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import sys
 

test/Driver/Dependencies/Inputs/touch.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # touch.py - /bin/touch that writes the LLVM epoch -*- python -*-
 #
 # This source file is part of the Swift.org open source project

test/Driver/Dependencies/Inputs/update-dependencies-bad.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # update-dependencies-bad.py - Fails on bad.swift -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -17,8 +17,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import shutil
 import signal

test/Driver/Dependencies/Inputs/update-dependencies.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # update-dependencies.py - Fake build for dependency analysis -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -27,8 +27,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import shutil
 import subprocess

test/Driver/Inputs/crash-after-generating-pch.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # crash.py - Sends SIGKILL to self. -*- python -*-
 #
 # This source file is part of the Swift.org open source project

test/Driver/Inputs/crash.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # crash.py - Sends SIGKILL to self. -*- python -*-
 #
 # This source file is part of the Swift.org open source project

test/Driver/Inputs/fail.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # fail.py - Just exits with an error code -*- python -*-
 #
 # This source file is part of the Swift.org open source project

test/Driver/Inputs/fake-toolchain/clang

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # clang++ - Fake Clang to test finding clang++ in the toolchain path
 #
 # This source file is part of the Swift.org open source project
@@ -11,6 +11,4 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 print("Sorry, I'm lazy-clang")

test/Driver/Inputs/fake-toolchain/ld

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ld - Fake ld to test finding the Darwin linker in the toolchain path
 #
 # This source file is part of the Swift.org open source project
@@ -11,6 +11,4 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 print("Sorry, wrong number!")

test/Driver/Inputs/filelists/check-filelist-abc.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # check-filelist-abc.py - Fake build to test driver-produced -filelists.
 #
 # This source file is part of the Swift.org open source project
@@ -11,8 +11,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import sys
 

test/Driver/Inputs/filelists/fake-ld.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # fake-ld.py - Fake Darwin linker to test driver-produced -filelists.
 #
 # This source file is part of the Swift.org open source project
@@ -11,8 +11,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import sys
 
 filelistFile = sys.argv[sys.argv.index('-filelist') + 1]

test/Incremental/Verifier/gen-output-file-map.py

@@ -1,6 +1,4 @@
-#!/usr/bin/env python
-
-from __future__ import print_function
+#!/usr/bin/env python3
 
 import argparse
 import io

test/Inputs/getmtime.py

@@ -1,6 +1,4 @@
-#!/usr/bin/env python
-
-from __future__ import print_function
+#!/usr/bin/env python3
 
 import os
 import sys

test/Inputs/symlink.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import os
 import subprocess
 import sys

test/Inputs/timeout.py

@@ -1,4 +1,4 @@
-#!/uar/bin/env python
+#!/uar/bin/env python3
 
 import subprocess
 import sys

test/Misc/you-should-be-using-LLVM_DEBUG.test-sh

@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 # -*- python -*-
 # RUN: %{python} %s '%swift_src_root'
 

test/ModuleInterface/ModuleCache/Inputs/check-is-new.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # check-is-new.py - a more-legible way to read a timestamp test than test(1)
 #

test/ModuleInterface/ModuleCache/Inputs/check-is-old.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # check-is-old.py - a more-legible way to read a timestamp test than test(1)
 #

test/ModuleInterface/ModuleCache/Inputs/make-old.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # make-old.py - /bin/touch that writes a constant "old" timestamp.
 #

test/RemoteMirror/Inputs/interop.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Exercise the SwiftRemoteMirrorLegacyInterop API. This works with
 # multiple versions of Swift. It builds Swift code using all versions,
@@ -7,8 +7,6 @@
 #
 # Invoke by passing the various Swift build directories as parameters.
 
-from __future__ import print_function
-
 import itertools
 import os
 import subprocess

test/ScanDependencies/Inputs/CommandRunner.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import subprocess
 import sys

test/Serialization/Inputs/binary_sub.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 

test/SourceKit/Inputs/sourcekitd_path_sanitize.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # sourcekitd_path_sanitize.py - Cleans up paths from sourcekitd-test output
 #
 # This source file is part of the Swift.org open source project

test/attr/Inputs/access-note-gen.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # coding=utf8
 
 """
@@ -6,8 +6,6 @@ Convert selected @objc attributes in a source file into access notes, removing
 the originals in the process.
 """
 
-from __future__ import print_function
-
 import io
 import re
 import sys

test/lit.cfg

@@ -18,7 +18,6 @@
 #
 # -----------------------------------------------------------------------------
 
-from __future__ import absolute_import
 import os
 import platform
 import re

test/stdlib/Integers.swift.gyb

@@ -20,7 +20,6 @@
 // REQUIRES: OS=macosx
 
 %{
-from __future__ import division
 word_bits = int(WORD_BITS) // 2
 from SwiftIntTypes import all_integer_types
 }%

test/stdlib/NumericParsing.swift.gyb

@@ -17,7 +17,6 @@
 // RUN: %line-directive %t/NumericParsing.swift -- %target-run %t/a.out
 // REQUIRES: executable_test
 %{
-from __future__ import division
 from SwiftIntTypes import all_integer_types
 
 word_bits = int(CMAKE_SIZEOF_VOID_P)

test/stdlib/SIMDConcreteIntegers.swift.gyb

@@ -20,7 +20,6 @@
 import StdlibUnittest
 
 %{
-from __future__ import division
 from SwiftIntTypes import all_integer_types
 word_bits = int(CMAKE_SIZEOF_VOID_P) * 8
 storagescalarCounts = [2,4,8,16,32,64]

test/stdlib/SIMDConcreteMasks.swift.gyb

@@ -20,7 +20,6 @@
 import StdlibUnittest
 
 %{
-from __future__ import division
 from SwiftIntTypes import all_integer_types
 word_bits = int(CMAKE_SIZEOF_VOID_P) * 8
 storagescalarCounts = [2,4,8,16,32,64]

tools/swift-inspect/build_script_helper.py

@@ -1,6 +1,4 @@
-#!/usr/bin/env python
-
-from __future__ import print_function
+#!/usr/bin/env python3
 
 import argparse
 import os

utils/80+-check

@@ -1,8 +1,6 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 
-from __future__ import print_function, unicode_literals
-
 import argparse
 import sys
 

utils/PathSanitizingFileCheck

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # utils/PathSanitizingFileCheck -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -9,8 +9,6 @@
 # See https://swift.org/LICENSE.txt for license information
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
-from __future__ import print_function
-
 import argparse
 import io
 import re

utils/analyze_code_size.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import re

utils/android/adb/commands.py

@@ -15,8 +15,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import subprocess
 import tempfile

utils/android/adb_clean.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # adb_reboot.py - Reboots and cleans an Android device. -*- python -*-
 #
 # This source file is part of the Swift.org open source project

utils/android/adb_push_built_products.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # adb_push_build_products.py - Push libraries to Android device -*- python -*-
 #
 # This source file is part of the Swift.org open source project

utils/android/adb_push_built_products/main.py

@@ -15,8 +15,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import argparse
 import glob
 import os

utils/android/adb_test_runner.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # adb_test_runner.py - Calls adb_test_runner.main -*- python -*-
 #
 # This source file is part of the Swift.org open source project

utils/android/adb_test_runner/main.py

@@ -17,8 +17,6 @@
 #
 # ----------------------------------------------------------------------------
 
-from __future__ import print_function
-
 import os
 import sys
 

utils/api_checker/sdk-module-lists/infer-imports.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python -u
 
-from __future__ import print_function
-
 import os
 import sys
 

utils/api_checker/swift-api-checker.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python3
 
-from __future__ import print_function
-
 import argparse
 import os
 import subprocess

utils/apply-fixit-edits.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # utils/apply-fixit-edits.py - Apply edits from .remap files -*- python -*-
 #
 # This source file is part of the Swift.org open source project
@@ -9,8 +9,6 @@
 # See https://swift.org/LICENSE.txt for license information
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
-from __future__ import print_function
-
 import argparse
 import collections
 import json

utils/backtrace-check

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 
 """
@@ -22,8 +22,6 @@ StaticString, StaticString, UInt, flags : UInt32) -> () + 444
 """
 
 
-from __future__ import absolute_import, print_function, unicode_literals
-
 import argparse
 import re
 import sys

utils/bug_reducer/bug_reducer/bug_reducer.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 

utils/bug_reducer/bug_reducer/func_bug_reducer.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import md5
 import os
 import sys

utils/bug_reducer/bug_reducer/list_reducer.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import random
 
 TESTRESULT_NOFAILURE = "NoFailure"

utils/bug_reducer/bug_reducer/opt_bug_reducer.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import json
 import md5
 import subprocess

utils/bug_reducer/bug_reducer/random_bug_finder.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import json
 import random
 import subprocess

utils/bug_reducer/bug_reducer/swift_tools.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import os
 import subprocess
 

utils/build-script

@@ -14,8 +14,6 @@ The ultimate tool for building Swift.
 """
 
 
-from __future__ import absolute_import, print_function, unicode_literals
-
 import json
 import os
 import platform

utils/build-tooling-libs

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # utils/build-tooling-libs - Helper tool for building the SwiftSyntax paresr
 # and SwiftStaticMirror libraries -*- python -*-
 #
@@ -23,8 +23,6 @@
 # This utility also provides capability to gather profile data and build the parser
 # library with PGO optimization enabled.
 
-from __future__ import print_function
-
 import copy
 import multiprocessing
 import os

utils/build_swift/build_swift/argparse/__init__.py

@@ -14,8 +14,6 @@ constructing parsers and more argument types. This module exposes a strict
 super-set of the argparse API and is meant to be used as a drop-in replacement.
 """
 
-from __future__ import absolute_import, unicode_literals
-
 from argparse import (ArgumentDefaultsHelpFormatter, ArgumentError,
                       ArgumentTypeError, FileType, HelpFormatter,
                       Namespace, RawDescriptionHelpFormatter,

utils/build_swift/build_swift/argparse/actions.py

@@ -13,8 +13,6 @@ default actions provided by the standard argparse.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import argparse
 import copy
 

utils/build_swift/build_swift/argparse/parser.py

@@ -13,9 +13,6 @@ destination actions as well as a new builder DSL for declaratively
 constructing complex parsers.
 """
 
-
-from __future__ import absolute_import, unicode_literals
-
 import argparse
 from contextlib import contextmanager
 

utils/build_swift/build_swift/argparse/types.py

@@ -13,8 +13,6 @@ arguments.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import os.path
 import re
 import shlex

utils/build_swift/build_swift/cache_utils.py

@@ -11,9 +11,6 @@
 Cache related utitlity functions and decorators.
 """
 
-
-from __future__ import absolute_import, unicode_literals
-
 import functools
 
 

utils/build_swift/build_swift/class_utils.py

@@ -12,9 +12,6 @@ Class utility functions and decorators.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
-
 __all__ = [
     'generate_repr',
 ]

utils/build_swift/build_swift/constants.py

@@ -6,11 +6,6 @@
 # See https://swift.org/LICENSE.txt for license information
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
-
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
 import os.path
 
 

utils/build_swift/build_swift/defaults.py

@@ -11,9 +11,6 @@
 Default option value definitions.
 """
 
-
-from __future__ import absolute_import, unicode_literals
-
 import os
 import platform
 

utils/build_swift/build_swift/driver_arguments.py

@@ -6,9 +6,6 @@
 # See https://swift.org/LICENSE.txt for license information
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
-
-from __future__ import absolute_import, unicode_literals
-
 import multiprocessing
 import os
 

utils/build_swift/build_swift/migration.py

@@ -12,8 +12,6 @@ Temporary module with functionality used to migrate away from build-script-impl.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import itertools
 import subprocess
 

utils/build_swift/build_swift/presets.py

@@ -12,8 +12,6 @@ Swift preset parsing and handling functionality.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import configparser
 import functools
 import io

utils/build_swift/build_swift/shell.py

@@ -12,8 +12,6 @@ Shell utilities wrapper module.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import abc
 import collections
 import functools

utils/build_swift/build_swift/versions.py

@@ -12,8 +12,6 @@ Version parsing classes.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import functools
 
 

utils/build_swift/build_swift/wrappers/__init__.py

@@ -6,9 +6,6 @@
 # See https://swift.org/LICENSE.txt for license information
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
-
-from __future__ import absolute_import, unicode_literals
-
 from . import xcrun as _xcrun
 
 

utils/build_swift/build_swift/wrappers/xcrun.py

@@ -11,9 +11,6 @@
 Wrapper module around the 'xcrun' command-line utility.
 """
 
-
-from __future__ import absolute_import, unicode_literals
-
 import functools
 import re
 import shlex

utils/build_swift/run_tests.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # This source file is part of the Swift.org open source project
 #
@@ -14,8 +14,6 @@ Utility script used to easily run the build_swift module unit tests.
 """
 
 
-from __future__ import absolute_import, unicode_literals
-
 import argparse
 import os
 import sys

utils/build_swift/tests/build_swift/argparse/test_actions.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import unittest
 
 from build_swift.argparse import (

utils/build_swift/tests/build_swift/argparse/test_parser.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import unittest
 from argparse import _ArgumentGroup, _MutuallyExclusiveGroup
 

utils/build_swift/tests/build_swift/argparse/test_types.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import os.path
 import platform
 import unittest

utils/build_swift/tests/build_swift/test_cache_utils.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import unittest
 
 from build_swift import cache_utils

utils/build_swift/tests/build_swift/test_constants.py

@@ -7,9 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import
-from __future__ import unicode_literals
-
 import os.path
 import unittest
 

utils/build_swift/tests/build_swift/test_defaults.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import unittest
 
 from build_swift import defaults

utils/build_swift/tests/build_swift/test_driver_arguments.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import os
 import platform
 import sys

utils/build_swift/tests/build_swift/test_migration.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import absolute_import, unicode_literals
-
 import platform
 import unittest
 

utils/build_swift/tests/build_swift/test_presets.py

@@ -7,8 +7,6 @@
 # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 
-from __future__ import unicode_literals
-
 import configparser
 import os
 import unittest