Delete --harmony-computed-property-names flag

test/mjsunit/es6/computed-property-names.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-computed-property-names
-
 
 function ID(x) {
   return x;
 }
 
 
 
 (function TestBasicsString() {
   var object = {
     a: 'A',
@@ skipping 276 matching lines @@
     var o = {
       get [throwMyError()]() { return 42; }
     };
   }, MyError);
   assertThrows(function() {
     var o = {
       set [throwMyError()](_) { }
     };
   }, MyError);
 })();