Remove runtime flags for Proxy and Reflect

test/mjsunit/harmony/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: --harmony-proxies --harmony-reflect --allow-natives-syntax
+// 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,
                Object.getPrototypeOf(Object.getOwnPropertyDescriptors));
@@ skipping 180 matching lines @@
   var result = Object.getOwnPropertyDescriptors(P);
   assertEquals({ "A": undefined }, result);
   assertTrue(result.hasOwnProperty("A"));
   assertEquals([
     "ownKeys()",
     "getOwnPropertyDescriptor(A)",
     "getOwnPropertyDescriptor(A)"
   ], log);
 }
 TestDuplicateKeys();