[Gardening] Remove an invalid (and flaky) test

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

Index: pkg/analysis_server/test/integration/analysis/get_errors_before_analysis_test.dart
diff --git a/pkg/analysis_server/test/integration/analysis/get_errors_before_analysis_test.dart b/pkg/analysis_server/test/integration/analysis/get_errors_before_analysis_test.dart
deleted file mode 100644
index 2c5d5b800cf9c6fb45d414dda8573667ec0ed54c..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/test/integration/analysis/get_errors_before_analysis_test.dart
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-
-import 'get_errors.dart';
-
-main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(GetErrorsBeforeTest);
-    defineReflectiveTests(GetErrorsBeforeTest_Driver);
-  });
-}
-
-class AbstractGetErrorsBeforeTest extends AnalysisDomainGetErrorsTest {
-  AbstractGetErrorsBeforeTest() : super(false);
-}
-
-@reflectiveTest
-class GetErrorsBeforeTest extends AbstractGetErrorsBeforeTest {}
-
-@reflectiveTest
-class GetErrorsBeforeTest_Driver extends AbstractGetErrorsBeforeTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}