Remove runtime flags for Proxy and Reflect

test/mjsunit/es6/reflect-prevent-extensions.js

 // Copyright 2010-2015 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Tests the Reflect.preventExtensions method - ES6 26.1.12.
 // This is adapted from object-prevent-extensions.js.
 
-// Flags: --allow-natives-syntax --harmony-reflect
+// Flags: --allow-natives-syntax
 
 
 var obj1 = {};
 // Extensible defaults to true.
 assertTrue(Object.isExtensible(obj1));
 assertTrue(Reflect.preventExtensions(obj1));
 
 // Make sure the is_extensible flag is set.
 assertFalse(Object.isExtensible(obj1));
 obj1.x = 42;
@@ skipping 113 matching lines @@
 obj = { prop1: 1, prop2: 2, 75: 'foo' };
 obj2 = { prop1: 3, prop2: 4, 150: 'bar' };
 assertTrue(%HaveSameMap(obj, obj2));
 assertTrue(Reflect.preventExtensions(obj));
 assertTrue(Reflect.preventExtensions(obj2));
 assertFalse(Object.isExtensible(obj));
 assertFalse(Object.isExtensible(obj2));
 assertFalse(Object.isSealed(obj));
 assertFalse(Object.isSealed(obj2));
 assertTrue(%HaveSameMap(obj, obj2));