Revert of test262 roll

test/test262/harness-adapt.js

 // Copyright 2011 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 86 matching lines @@
     },
     createRealm() {
       return RealmOperators(Realm.createAllowCrossRealmAccess());
     },
     global: Realm.eval(realm, 'this')
   };
   $.global.$ = $;
   return $;
 }
 
-var $262 = RealmOperators(Realm.current());
+var $ = RealmOperators(Realm.current());