Make the analysis server integration tests driver only.

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

Index: pkg/analysis_server/test/integration/analysis/update_content_list_test.dart
diff --git a/pkg/analysis_server/test/integration/analysis/update_content_list_test.dart b/pkg/analysis_server/test/integration/analysis/update_content_list_test.dart
index 5ca5c08f66d6515b94cf926f8574cb768ff1749f..9cc267ccb4c9310463bceec68d168c7d45fd5c7f 100644
--- a/pkg/analysis_server/test/integration/analysis/update_content_list_test.dart
+++ b/pkg/analysis_server/test/integration/analysis/update_content_list_test.dart
@@ -11,11 +11,11 @@ import '../integration_tests.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(UpdateContentTest);
-    defineReflectiveTests(UpdateContentTest_Driver);
   });
 }
 
-class AbstractUpdateContentTest extends AbstractAnalysisServerIntegrationTest {
+@reflectiveTest
+class UpdateContentTest extends AbstractAnalysisServerIntegrationTest {
   test_updateContent_list() {
     String pathname = sourcePath('test.dart');
     String goodText = r'''
@@ -50,12 +50,3 @@ main() {
     });
   }
 }
-
-@reflectiveTest
-class UpdateContentTest extends AbstractUpdateContentTest {}
-
-@reflectiveTest
-class UpdateContentTest_Driver extends AbstractUpdateContentTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}