[LegacyPM] Remove unused declaration initializeAnnotation2MetadataLegacyPass

The corresponding function definition was removed by:

  commit 773d663e4729f55d23cb04f78a9d003643f2cb37
  Author: Arthur Eubanks <aeubanks@google.com>
  Date:   Mon Feb 27 19:00:37 2023 -0800

diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 40f5258..e08cb20 100644 (file)
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -53,7 +53,6 @@ void initializeAAResultsWrapperPassPass(PassRegistry&);
 void initializeAlwaysInlinerLegacyPassPass(PassRegistry&);
 void initializeAssignmentTrackingAnalysisPass(PassRegistry &);
 void initializeAssumeBuilderPassLegacyPassPass(PassRegistry &);
-void initializeAnnotation2MetadataLegacyPass(PassRegistry &);
 void initializeAssumptionCacheTrackerPass(PassRegistry&);
 void initializeAtomicExpandPass(PassRegistry&);
 void initializeBasicBlockSectionsProfileReaderPass(PassRegistry &);