Delete --harmony-computed-property-names flag

test/mjsunit/es6/computed-property-names-deopt.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 --allow-natives-syntax
+// Flags: --allow-natives-syntax
 
 
 (function TestProtoDeopt() {
   var proto = {};
 
   function deoptMe() {
     %DeoptimizeFunction(f);
     return proto;
   }
 
   function checkObject(name, value, o) {
     assertSame(proto, Object.getPrototypeOf(o));
     assertTrue(o.hasOwnProperty(name));
     assertEquals(value, o[name]);
   }
 
   function f(name, value) {
     return { [name]: value, __proto__: deoptMe() };
   }
 
   checkObject("a", 1, f("a", 1));
   checkObject("b", 2, f("b", 2));
   %OptimizeFunctionOnNextCall(f);
   checkObject("c", 3, f("c", 3));
 })();