Split "_Driver" tests to separate test files.

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

Index: pkg/analysis_server/test/integration/analysis/error_test.dart
diff --git a/pkg/analysis_server/test/integration/analysis/error_test.dart b/pkg/analysis_server/test/integration/analysis/error_test.dart
index 2a86499b9fab096050b886b7777a530b534de815..5c4bea4be28d41d396134fcfc0e02cadec086c1a 100644
--- a/pkg/analysis_server/test/integration/analysis/error_test.dart
+++ b/pkg/analysis_server/test/integration/analysis/error_test.dart
@@ -11,7 +11,6 @@ import '../integration_tests.dart';
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisErrorIntegrationTest);
-    defineReflectiveTests(AnalysisErrorIntegrationTest_Driver);
   });
 }
 
@@ -98,20 +97,3 @@ abstract class C extends B {
 @reflectiveTest
 class AnalysisErrorIntegrationTest
     extends AbstractAnalysisErrorIntegrationTest {}
-
-@reflectiveTest
-class AnalysisErrorIntegrationTest_Driver
-    extends AbstractAnalysisErrorIntegrationTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-
-  @failingTest
-  test_super_mixins_enabled() async {
-    //  Expected: empty
-    //    Actual: [
-    //    AnalysisError:{"severity":"ERROR","type":"COMPILE_TIME_ERROR","location":{"file":"/var/folders/00/0w95r000h01000cxqpysvccm003j4q/T/analysisServerfbuOQb/test.dart","offset":31,"length":1,"startLine":1,"startColumn":32},"message":"The class 'C' can't be used as a mixin because it extends a class other than Object.","correction":"","code":"mixin_inherits_from_not_object","hasFix":false},
-    //    AnalysisError:{"severity":"ERROR","type":"COMPILE_TIME_ERROR","location":{"file":"/var/folders/00/0w95r000h01000cxqpysvccm003j4q/T/analysisServerfbuOQb/test.dart","offset":31,"length":1,"startLine":1,"startColumn":32},"message":"The class 'C' can't be used as a mixin because it references 'super'.","correction":"","code":"mixin_references_super","hasFix":false}
-    //  ]
-    return super.test_super_mixins_enabled();
-  }
-}