[test] Don't run still-crashing compiler_crashers under no-asserts builds.

Per discussion on the list. From now on, when you fix a compiler_crashers
test case, move it to compiler_crashers_fixed so that we get no-asserts and
ASan coverage.

Swift SVN r27055

validation-test/compiler_crashers_fixed/1318-swift-constraints-constraintgraph-addconstraint.swift

@@ -0,0 +1,14 @@
+// RUN: not %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+e?) {
+typealias e?) {
+}
+}
+func f(b: A<T) {
+func g: A, Any) -> d<Int>("\() -> String = T, Any, object2: b: d = {
+class b<T where I.A: String) -> (1))
+for b wh