Remove more libraries directives from server

pkg/analysis_server/lib/src/status/memory_use.dart

 // Copyright (c) 2016, 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 analysis_server.src.status.memory_use;
-
 import 'dart:collection';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/context/context.dart' show AnalysisContextImpl;
 import 'package:analyzer/src/dart/element/element.dart';
@@ skipping 290 matching lines @@
       }
     }
     ownerMap
         .putIfAbsent(instance.runtimeType, () => new HashSet<Type>())
         .add(owner.runtimeType);
     if (instance is LibrarySpecificUnit) {
       uniqueLSUs.add(instance);
     }
   }
 }