Remove the non-driver versions of several tests

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

Index: pkg/analysis_server/test/services/refactoring/rename_import_test.dart
diff --git a/pkg/analysis_server/test/services/refactoring/rename_import_test.dart b/pkg/analysis_server/test/services/refactoring/rename_import_test.dart
index c413707a053027bf2f0ed2685a215bf3b9daab16..0bc587ca5dccb01c2abcde4f60454854363bf67e 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_import_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_import_test.dart
@@ -12,12 +12,14 @@ import 'abstract_rename.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(RenameImportTest);
-    defineReflectiveTests(RenameImportTest_Driver);
   });
 }
 
 @reflectiveTest
 class RenameImportTest extends RenameRefactoringTest {
+  @override
+  bool get enableNewAnalysisDriver => true;
+
   test_checkNewName() async {
     await indexTestUnit("import 'dart:async' as test;");
     _createRefactoring("import 'dart:");
@@ -229,9 +231,3 @@ main() {
     createRenameRefactoringForElement(directive.element);
   }
 }
-
-@reflectiveTest
-class RenameImportTest_Driver extends RenameImportTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}