Enable --harmony-trailing-commas

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 9d1789143225916bcf774cce7f44fe2b3e34acaa..abc235acb1c881383c36b732dd85da50951dc8e2 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -3461,7 +3461,6 @@ EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(datetime_format_to_parts)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(icu_case_mapping)
 #endif
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_restrictive_generators)
-EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_trailing_commas)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_class_fields)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object_spread)
 
@@ -4022,7 +4021,6 @@ bool Genesis::InstallExperimentalNatives() {
       "native datetime-format-to-parts.js", nullptr};
 #endif
   static const char* harmony_restrictive_generators_natives[] = {nullptr};
-  static const char* harmony_trailing_commas_natives[] = {nullptr};
   static const char* harmony_class_fields_natives[] = {nullptr};
   static const char* harmony_object_spread_natives[] = {nullptr};