Remove more libraries directives from server

pkg/analysis_server/lib/src/operation/operation_queue.dart

 // 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 operation.queue;
-
 import 'dart:collection';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/operation/operation.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 /**
  * A queue of operations in an [AnalysisServer].
  */
@@ skipping 113 matching lines @@
       for (ServerOperation operation in queue) {
         if (test(operation)) {
           queue.remove(operation);
           return operation;
         }
       }
     }
     return null;
   }
 }