Remove the non-driver versions of several tests

pkg/analysis_server/test/services/refactoring/rename_library_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:analyzer/src/generated/source.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'abstract_rename.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(RenameLibraryTest);
-    defineReflectiveTests(RenameLibraryTest_Driver);
   });
 }
 
 @reflectiveTest
 class RenameLibraryTest extends RenameRefactoringTest {
+  @override
+  bool get enableNewAnalysisDriver => true;
+
   test_checkNewName() async {
     await indexTestUnit('''
 library my.app;
 ''');
     _createRenameRefactoring();
     // null
     refactoring.newName = null;
     assertRefactoringStatus(
         refactoring.checkNewName(), RefactoringProblemSeverity.FATAL,
         expectedMessage: "Library name must not be null.");
@@ skipping 67 matching lines @@
         '/part.dart',
         '''
 part of the.new.name;
 ''');
   }
 
   void _createRenameRefactoring() {
     createRenameRefactoringForElement(testUnitElement.library);
   }
 }
-
-@reflectiveTest
-class RenameLibraryTest_Driver extends RenameLibraryTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}