Remove the non-driver versions of several tests

pkg/analysis_server/test/services/correction/assist_test.dart

Index: pkg/analysis_server/test/services/correction/assist_test.dart
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
index b1b4c389e4cecc8e1d31e3dbc2bf9d1b6ece1623..2a3bac6dddadd87e7d811906c73ff942afab170a 100644
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ b/pkg/analysis_server/test/services/correction/assist_test.dart
@@ -31,7 +31,6 @@ import 'flutter_util.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AssistProcessorTest);
-    defineReflectiveTests(AssistProcessorTest_Driver);
   });
 }
 
@@ -46,6 +45,9 @@ class AssistProcessorTest extends AbstractSingleUnitTest {
   String resultCode;
   LinkedEditGroup linkedPositionGroup;
 
+  @override
+  bool get enableNewAnalysisDriver => true;
+
   /**
    * Asserts that there is an [Assist] of the given [kind] at [offset] which
    * produces the [expected] code when applied to [testCode].
@@ -4718,12 +4720,6 @@ main() {
   }
 }
 
-@reflectiveTest
-class AssistProcessorTest_Driver extends AssistProcessorTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}
-
 class _DartAssistContextForValues implements DartAssistContext {
   @override
   final Source source;