[es6] Remove harmony-object-literal flag

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index c87dffca8f4d9336de62a7810e30c83e2a4c59ab..f450608259a9ae845280f38a274eb103771deddc 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -908,7 +908,6 @@ Parser::Parser(ParseInfo* info)
   set_allow_harmony_modules(!info->is_native() && FLAG_harmony_modules);
   set_allow_harmony_arrow_functions(FLAG_harmony_arrow_functions);
   set_allow_harmony_classes(FLAG_harmony_classes);
-  set_allow_harmony_object_literals(FLAG_harmony_object_literals);
   set_allow_harmony_sloppy(FLAG_harmony_sloppy);
   set_allow_harmony_unicode(FLAG_harmony_unicode);
   set_allow_harmony_computed_property_names(
@@ -4369,7 +4368,6 @@ PreParser::PreParseResult Parser::ParseLazyFunctionBodyWithPreParser(
     SET_ALLOW(harmony_modules);
     SET_ALLOW(harmony_arrow_functions);
     SET_ALLOW(harmony_classes);
-    SET_ALLOW(harmony_object_literals);
     SET_ALLOW(harmony_sloppy);
     SET_ALLOW(harmony_unicode);
     SET_ALLOW(harmony_computed_property_names);