Normalized map copies should not share code caches

Review URL: https://codereview.chromium.org/12328136

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13754 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/objects.cc

@@ -5268,7 +5268,6 @@ MaybeObject* Map::CopyNormalized(PropertyNormalizationMode mode,
     result->set_inobject_properties(inobject_properties());
   }
 
-  result->set_code_cache(code_cache());
   result->set_is_shared(sharing == SHARED_NORMALIZED_MAP);
   result->set_dictionary_map(true);