Remove harmony-atomics flag and collapse it into sharedarraybuffer flag

test/mjsunit/harmony/futex.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: --allow-natives-syntax --harmony-atomics --harmony-sharedarraybuffer
+// Flags: --allow-natives-syntax --harmony-sharedarraybuffer
 
 (function TestFailsWithNonSharedArray() {
   var ab = new ArrayBuffer(16);
 
   var i8a = new Int8Array(ab);
   var i16a = new Int16Array(ab);
   var i32a = new Int32Array(ab);
   var ui8a = new Uint8Array(ab);
   var ui8ca = new Uint8ClampedArray(ab);
   var ui16a = new Uint16Array(ab);
@@ skipping 249 matching lines @@
     assertEquals(0, %AtomicsFutexNumWaitersForTesting(i32a, index2));
 
     for (id = 0; id < 4; ++id) {
       assertEquals(Atomics.OK, workers[id].getMessage());
       workers[id].terminate();
     }
 
   })();
 
 }