Reverse the sense of the flag to make it easier to find test that need to be converted

pkg/analysis_server/test/search/top_level_declarations_test.dart

Index: pkg/analysis_server/test/search/top_level_declarations_test.dart
diff --git a/pkg/analysis_server/test/search/top_level_declarations_test.dart b/pkg/analysis_server/test/search/top_level_declarations_test.dart
index 22216a6b9d8143be9fa552f13c8b70210e5c5478..a155e0723662c8b1ea675c2131967200e5945833 100644
--- a/pkg/analysis_server/test/search/top_level_declarations_test.dart
+++ b/pkg/analysis_server/test/search/top_level_declarations_test.dart
@@ -56,12 +56,6 @@ class TopLevelDeclarationsTest extends AbstractSearchDomainTest {
     return null;
   }
 
-  @override
-  void setUp() {
-    enableNewAnalysisDriver = true;
-    super.setUp();
-  }
-
   test_invalidRegex() async {
     var result = await findTopLevelDeclarations('[A');
     expect(result, new isInstanceOf<RequestError>());