[IR] Remove unused variables from llvm#123617

Failed to notice them when landing that patch - apologies!

Author: junlarsen

llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp

@@ -1924,7 +1924,6 @@ DataFlowSanitizer::getShadowOriginAddress(Value *Addr, Align InstAlignment,
     ShadowLong =
         IRB.CreateAdd(ShadowLong, ConstantInt::get(IntptrTy, ShadowBase));
   }
-  IntegerType *ShadowTy = IntegerType::get(*Ctx, ShadowWidthBits);
   Value *ShadowPtr = IRB.CreateIntToPtr(ShadowLong, PointerType::get(*Ctx, 0));
   Value *OriginPtr = nullptr;
   if (shouldTrackOrigins()) {

llvm/lib/Transforms/Utils/ModuleUtils.cpp

@@ -29,7 +29,6 @@ using namespace llvm;
 static void appendToGlobalArray(StringRef ArrayName, Module &M, Function *F,
                                 int Priority, Constant *Data) {
   IRBuilder<> IRB(M.getContext());
-  FunctionType *FnTy = FunctionType::get(IRB.getVoidTy(), false);
 
   // Get the current set of static global constructors and add the new ctor
   // to the list.