Remove some more library directives

pkg/analysis_server/test/plugin/test_all.dart

Index: pkg/analysis_server/test/plugin/test_all.dart
diff --git a/pkg/analysis_server/test/plugin/test_all.dart b/pkg/analysis_server/test/plugin/test_all.dart
index 385a8c735416da1baf84461ff9b873bd54263fef..14ecead1c220df52d738cd87f71a13bf19cb3df4 100644
--- a/pkg/analysis_server/test/plugin/test_all.dart
+++ b/pkg/analysis_server/test/plugin/test_all.dart
@@ -1,7 +1,6 @@
 // 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.
-library test.plugin.analysis_contributor;
 
 import 'package:test_reflective_loader/test_reflective_loader.dart';