Remove the non-driver versions of several tests

pkg/analysis_server/test/domain_diagnostic_test.dart

Index: pkg/analysis_server/test/domain_diagnostic_test.dart
diff --git a/pkg/analysis_server/test/domain_diagnostic_test.dart b/pkg/analysis_server/test/domain_diagnostic_test.dart
index b4b2cf4fe8f7c2c88b8bfdb9bc5975f9f9864c27..8cb7e8b1c3eb935d322727a4ad1b64998f90fa84 100644
--- a/pkg/analysis_server/test/domain_diagnostic_test.dart
+++ b/pkg/analysis_server/test/domain_diagnostic_test.dart
@@ -12,7 +12,6 @@ import 'analysis_abstract.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(DiagnosticDomainTest);
-    defineReflectiveTests(DiagnosticDomainTest_Driver);
   });
 }
 
@@ -20,6 +19,8 @@ main() {
 class DiagnosticDomainTest extends AbstractAnalysisTest {
   @override
   void setUp() {
+    enableNewAnalysisDriver = true;
+    generateSummaryFiles = true;
     super.setUp();
     handler = new DiagnosticDomainHandler(server);
     server.handlers = [handler];
@@ -56,13 +57,3 @@ class DiagnosticDomainTest extends AbstractAnalysisTest {
     expect(result.contexts, isEmpty);
   }
 }
-
-@reflectiveTest
-class DiagnosticDomainTest_Driver extends DiagnosticDomainTest {
-  @override
-  void setUp() {
-    enableNewAnalysisDriver = true;
-    generateSummaryFiles = true;
-    super.setUp();
-  }
-}