[NewPM] Remove StripGCRelocatesLegacyPass (llvm#73403)

This pass isn't used anywhere upstream and thus has no test coverage.
For these reasons, remove it.

llvm/include/llvm/InitializePasses.h

@@ -292,7 +292,6 @@ void initializeStackSafetyInfoWrapperPassPass(PassRegistry &);
 void initializeStackSlotColoringPass(PassRegistry&);
 void initializeStraightLineStrengthReduceLegacyPassPass(PassRegistry &);
 void initializeStripDebugMachineModulePass(PassRegistry &);
-void initializeStripGCRelocatesLegacyPass(PassRegistry &);
 void initializeStructurizeCFGLegacyPassPass(PassRegistry &);
 void initializeTailCallElimPass(PassRegistry&);
 void initializeTailDuplicatePass(PassRegistry&);

llvm/lib/Transforms/Utils/StripGCRelocates.cpp

@@ -18,8 +18,6 @@
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Statepoint.h"
-#include "llvm/InitializePasses.h"
-#include "llvm/Pass.h"
 
 using namespace llvm;
 
@@ -66,21 +64,3 @@ PreservedAnalyses StripGCRelocates::run(Function &F,
   PA.preserveSet<CFGAnalyses>();
   return PA;
 }
-
-namespace {
-struct StripGCRelocatesLegacy : public FunctionPass {
-  static char ID; // Pass identification, replacement for typeid
-  StripGCRelocatesLegacy() : FunctionPass(ID) {
-    initializeStripGCRelocatesLegacyPass(*PassRegistry::getPassRegistry());
-  }
-
-  void getAnalysisUsage(AnalysisUsage &Info) const override {}
-
-  bool runOnFunction(Function &F) override { return ::stripGCRelocates(F); }
-};
-char StripGCRelocatesLegacy::ID = 0;
-} // namespace
-
-INITIALIZE_PASS(StripGCRelocatesLegacy, "strip-gc-relocates",
-                "Strip gc.relocates inserted through RewriteStatepointsForGC",
-                true, false)

llvm/lib/Transforms/Utils/Utils.cpp

@@ -29,7 +29,6 @@ void llvm::initializeTransformUtils(PassRegistry &Registry) {
   initializeLowerInvokeLegacyPassPass(Registry);
   initializeLowerSwitchLegacyPassPass(Registry);
   initializePromoteLegacyPassPass(Registry);
-  initializeStripGCRelocatesLegacyPass(Registry);
   initializeFixIrreduciblePass(Registry);
   initializeUnifyLoopExitsLegacyPassPass(Registry);
 }