[clang] Remove unused variable AllElementsInt.

This has been unused ever since it was committed in b8a501c.

Differential Revision: https://reviews.llvm.org/D120629

clang/lib/Sema/SemaDecl.cpp

@@ -18474,9 +18474,6 @@ void Sema::ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange,
   unsigned NumNegativeBits = 0;
   unsigned NumPositiveBits = 0;
 
-  // Keep track of whether all elements have type int.
-  bool AllElementsInt = true;
-
   for (unsigned i = 0, e = Elements.size(); i != e; ++i) {
     EnumConstantDecl *ECD =
       cast_or_null<EnumConstantDecl>(Elements[i]);
@@ -18491,10 +18488,6 @@ void Sema::ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange,
     else
       NumNegativeBits = std::max(NumNegativeBits,
                                  (unsigned)InitVal.getMinSignedBits());
-
-    // Keep track of whether every enum element has type int (very common).
-    if (AllElementsInt)
-      AllElementsInt = ECD->getType() == Context.IntTy;
   }
 
   // Figure out the type that should be used for this enum.