Revert "Minor decoder optimizations, kernel fixes, cpu backend fixes"

src/xenia/cpu/hir/label.h

@@ -26,13 +26,6 @@ class Label {
   char* name;
 
   void* tag;
-  // just use stringification of label id
-  // this will later be used as an input to xbyak. xbyak only accepts
-  // std::string as a value, not passed by reference, so precomputing the
-  // stringification does not help
-  std::string GetIdString() {
-	  return std::to_string(id);
-  }
 };
 
 }  // namespace hir