Remove some more library directives

pkg/analysis_server/test/abstract_context.dart

Index: pkg/analysis_server/test/abstract_context.dart
diff --git a/pkg/analysis_server/test/abstract_context.dart b/pkg/analysis_server/test/abstract_context.dart
index a2f1a086dbe6cb8ef511c438e677a7ee0c66579f..847179b1b06ca849dd808093ff00c3995595d5db 100644
--- a/pkg/analysis_server/test/abstract_context.dart
+++ b/pkg/analysis_server/test/abstract_context.dart
@@ -2,8 +2,6 @@
 // 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 testing.abstract_context;
-
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';