Remove some more library directives

pkg/analysis_server/test/operation/test_all.dart

Index: pkg/analysis_server/test/operation/test_all.dart
diff --git a/pkg/analysis_server/test/operation/test_all.dart b/pkg/analysis_server/test/operation/test_all.dart
index 1b6f65952f4d37d389dbbec8454f3d1f57fe631b..dce61f72592dbe60deaa7abdd904543a4e9be6ad 100644
--- a/pkg/analysis_server/test/operation/test_all.dart
+++ b/pkg/analysis_server/test/operation/test_all.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 test.operation.all;
-
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'operation_queue_test.dart' as operation_queue_test;