Make the analysis server integration tests driver only.

pkg/analysis_server/test/integration/analysis/overrides_test.dart

Index: pkg/analysis_server/test/integration/analysis/overrides_test.dart
diff --git a/pkg/analysis_server/test/integration/analysis/overrides_test.dart b/pkg/analysis_server/test/integration/analysis/overrides_test.dart
index 595d24dfc63b5f7dfb2c7a4add961be0cd81a8ec..34865f0b05f792646bbe12b7c416db74c7ab51c9 100644
--- a/pkg/analysis_server/test/integration/analysis/overrides_test.dart
+++ b/pkg/analysis_server/test/integration/analysis/overrides_test.dart
@@ -11,11 +11,11 @@ import '../integration_tests.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(OverridesTest);
-    defineReflectiveTests(OverridesTest_Driver);
   });
 }
 
-class AbstractOverridesTest extends AbstractAnalysisServerIntegrationTest {
+@reflectiveTest
+class OverridesTest extends AbstractAnalysisServerIntegrationTest {
   test_overrides() {
     String pathname = sourcePath('test.dart');
     String text = r'''
@@ -120,12 +120,3 @@ class Target extends Base implements Interface1, Interface2 {
     });
   }
 }
-
-@reflectiveTest
-class OverridesTest extends AbstractOverridesTest {}
-
-@reflectiveTest
-class OverridesTest_Driver extends AbstractOverridesTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}