Enable ES6 generators

test/mjsunit/es6/generators-debug-scopes.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.
 
-// Flags: --expose-debug-as debug --harmony-generators
+// Flags: --expose-debug-as debug
 
 var Debug = debug.Debug;
 
 function RunTest(name, formals_and_body, args, handler, continuation) {
   var handler_called = false;
   var exception = null;
 
   function listener(event, exec_state, event_data, data) {
     try {
       if (event == Debug.DebugEvent.Break) {
@@ skipping 301 matching lines @@
 
 RunTest("Catch block 1",
         ["try { throw 'Exception'; } catch (e) { debugger; }"],
         [],
         function (exec_state) {
           CheckScopeChain([debug.ScopeType.Catch,
                            debug.ScopeType.Local,
                            debug.ScopeType.Global], exec_state);
           CheckScopeContent({e:'Exception'}, 0, exec_state);
         });