Merge pull request #85869 from egorzhdan/egorzhdan/remove-interop-compat-version

[cxx-interop] Remove compatibility versions

include/swift/Basic/LangOptions.h

@@ -333,10 +333,6 @@ namespace swift {
     /// disabled because it is not complete.
     bool EnableCXXInterop = false;
 
-    /// The C++ interoperability source compatibility version. Defaults
-    /// to the Swift language version.
-    version::Version cxxInteropCompatVersion;
-
     /// What version of C++ interoperability a textual interface was originally
     /// generated with (if at all).
     std::optional<version::Version> FormalCxxInteropMode;
@@ -753,13 +749,6 @@ namespace swift {
       return EffectiveLanguageVersion.isVersionAtLeast(major, minor);
     }
 
-    /// Whether the C++ interoperability compatibility version is at least
-    /// 'major'.
-    bool isCxxInteropCompatVersionAtLeast(unsigned major,
-                                          unsigned minor = 0) const {
-      return cxxInteropCompatVersion.isVersionAtLeast(major, minor);
-    }
-
     /// Sets the "_hasAtomicBitWidth" conditional.
     void setHasAtomicBitWidth(llvm::Triple triple);
 

include/swift/Basic/Version.h

@@ -184,11 +184,6 @@ StringRef getCurrentCompilerSerializationTag();
 /// same serialization tag.
 StringRef getCurrentCompilerChannel();
 
-/// Retrieves the value of the upcoming C++ interoperability compatibility
-/// version that's going to be presented as some new concrete version to the
-/// users.
-unsigned getUpcomingCxxInteropCompatVersion();
-
 /// Retrieves the version of the running compiler. It could be a tag or
 /// a "development" version that only has major/minor.
 std::string getCompilerVersion();