[Clang][Webassembly] Remove unrachable code in ParseTypeQualifierListOpt (llvm#153729)

Static analysis flagged this goto as unreachable and indeed it is, so
removing it.

Author: shafik

clang/lib/Parse/ParseDecl.cpp

@@ -6224,7 +6224,6 @@ void Parser::ParseTypeQualifierListOpt(
     case tok::kw___funcref:
       ParseWebAssemblyFuncrefTypeAttribute(DS.getAttributes());
       continue;
-      goto DoneWithTypeQuals;
 
     case tok::kw___pascal:
       if (AttrReqs & AR_VendorAttributesParsed) {