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

pkg/analysis_server/test/analysis/notification_overrides_test.dart

Index: pkg/analysis_server/test/analysis/notification_overrides_test.dart
diff --git a/pkg/analysis_server/test/analysis/notification_overrides_test.dart b/pkg/analysis_server/test/analysis/notification_overrides_test.dart
index cb85b97d36dc8517411de41688b679f743bb4345..f924348febf38d76edc3c586d912d1c7a3119dab 100644
--- a/pkg/analysis_server/test/analysis/notification_overrides_test.dart
+++ b/pkg/analysis_server/test/analysis/notification_overrides_test.dart
@@ -25,6 +25,9 @@ class AnalysisNotificationOverridesTest extends AbstractAnalysisTest {
   List<Override> overridesList;
   Override override;
 
+  @override
+  bool get enableNewAnalysisDriver => false;
+
   /**
    * Asserts that there is an overridden interface [OverriddenMember] at the
    * offset of [search] in [override].