Fix code for @failingTest refactoring tests.

pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.refactoring.rename_unit_member;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ skipping 611 matching lines @@
   newName += 2;
 }
 ''');
   }
 }
 
 @reflectiveTest
 class RenameUnitMemberTest_Driver extends RenameUnitMemberTest {
   @override
   bool get enableNewAnalysisDriver => true;
-
-  @failingTest
-  @override
-  test_createChange_FunctionElement_imported() {
-    return test_createChange_FunctionElement_imported();
-  }
 }