Remove the non-driver versions of several tests

pkg/analysis_server/test/services/refactoring/rename_label_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.
 
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'abstract_rename.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(RenameLabelTest);
-    defineReflectiveTests(RenameLabelTest_Driver);
   });
 }
 
 @reflectiveTest
 class RenameLabelTest extends RenameRefactoringTest {
+  @override
+  bool get enableNewAnalysisDriver => true;
+
   test_checkNewName_LocalVariableElement() async {
     await indexTestUnit('''
 main() {
 test:
   while (true) {
     break test;
   }
 }
 ''');
     createRenameRefactoringAtString('test:');
@@ skipping 45 matching lines @@
     break test;
   }
 }
 ''');
     // configure refactoring
     createRenameRefactoringAtString('test:');
     // old name
     expect(refactoring.oldName, 'test');
   }
 }
-
-@reflectiveTest
-class RenameLabelTest_Driver extends RenameLabelTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}