Split "_Driver" tests to separate test files.

pkg/analyzer/test/generated/non_hint_code_test.dart

Index: pkg/analyzer/test/generated/non_hint_code_test.dart
diff --git a/pkg/analyzer/test/generated/non_hint_code_test.dart b/pkg/analyzer/test/generated/non_hint_code_test.dart
index 04a56238fec6be1c65163607ff13a6e53f70d79c..9954b62bb90506c2ffa42a163fb24945cd675de0 100644
--- a/pkg/analyzer/test/generated/non_hint_code_test.dart
+++ b/pkg/analyzer/test/generated/non_hint_code_test.dart
@@ -15,7 +15,6 @@ import 'resolver_test_case.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(NonHintCodeTest);
-    defineReflectiveTests(NonHintCodeTest_Driver);
   });
 }
 
@@ -1281,12 +1280,6 @@ class B extends A {
   }
 }
 
-@reflectiveTest
-class NonHintCodeTest_Driver extends NonHintCodeTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}
-
 class PubSuggestionCodeTest extends ResolverTestCase {
   test_import_package() async {
     Source source = addSource("import 'package:somepackage/other.dart';");