Change version string to 'swift-5.5-RELEASE'

Author: shahmishal

lib/Basic/Version.cpp

@@ -400,30 +400,7 @@ std::string getSwiftFullVersion(Version effectiveVersion) {
  OS << SWIFT_VENDOR "";
 #endif
 
- OS << "Swift version " SWIFT_VERSION_STRING;
-#ifndef SWIFT_COMPILER_VERSION
- OS << "-dev";
-#endif
-
-if (effectiveVersion != Version::getCurrentLanguageVersion()) {
- OS << " effective-" << effectiveVersion;
- }
-
-#if defined(SWIFT_COMPILER_VERSION)
- OS << " (swiftlang-" SWIFT_COMPILER_VERSION;
-#if defined(CLANG_COMPILER_VERSION)
- OS << " clang-" CLANG_COMPILER_VERSION;
-#endif
- OS << ")";
-#elif defined(LLVM_REVISION) || defined(SWIFT_REVISION)
- OS << " (";
-printFullRevisionString(OS);
- OS << ")";
-#endif
-
-// Suppress unused function warning
- (void)&printFullRevisionString;
-
+ OS << "Swift version " SWIFT_VERSION_STRING " (swift-5.5-RELEASE)";
 return OS.str();
 }