Fix copyright headers.

test/mjsunit/asm/embenchen/primes.js

-// Copyright 2014 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.
-
 var EXPECTED_OUTPUT = 'lastprime: 387677.\n';
 var Module = {
   arguments: [1],
   print: function(x) {Module.printBuffer += x + '\n';},
   preRun: [function() {Module.printBuffer = ''}],
   postRun: [function() {
     assertEquals(EXPECTED_OUTPUT, Module.printBuffer);
   }],
 };
 // The Module object: Our interface to the outside world. We import
@@ skipping 5964 matching lines @@
 }
 
 // shouldRunNow refers to calling main(), not run().
 var shouldRunNow = true;
 if (Module['noInitialRun']) {
   shouldRunNow = false;
 }
 
 
 run([].concat(Module["arguments"]));