Remove destructuring and default arguments runtime flags

test/mjsunit/es6/destructuring.js

 // Copyright 2015 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-destructuring-bind
-// Flags: --harmony-default-parameters
 
 (function TestObjectLiteralPattern() {
   var { x : x, y : y, get, set } = { x : 1, y : 2, get: 3, set: 4 };
   assertEquals(1, x);
   assertEquals(2, y);
   assertEquals(3, get);
   assertEquals(4, set);
 
   var {z} = { z : 3 };
   assertEquals(3, z);
@@ skipping 1111 matching lines @@
     assertEquals([2, 3], bar);
   }
 
   assertEquals("hello", foo);
   assertEquals("world", bar);
   assertEquals(42, baz);
 
   assertEquals(undefined, eval('try {throw {foo: 1, bar: 2}} catch({foo}) {}'));
   assertEquals(undefined, eval('try {throw [1, 2, 3]} catch([x]) {}'));
 })();