Remove --harmony-* flags for new Object static methods

test/mjsunit/es8/object-get-own-property-descriptors.js

 // Copyright 2016 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-object-own-property-descriptors
 // Flags: --allow-natives-syntax
 
 function DataDescriptor(value) {
   return { "enumerable": true, "configurable": true, "writable": true, value };
 }
 
 
 function TestMeta() {
   assertEquals(1, Object.getOwnPropertyDescriptors.length);
   assertEquals(Function.prototype,
@@ skipping 210 matching lines @@
   });
   var result = Object.getOwnPropertyDescriptors(P);
   assertEquals({}, result);
   assertFalse(result.hasOwnProperty("fakeProperty"));
   assertEquals([
     "ownKeys()",
     "getOwnPropertyDescriptor(fakeProperty)"
   ], log);
 }
 TestFakeProperty();