Get rid of all the library tags.

lib/src/command/deps.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 pub.command.list;
-
 import 'dart:collection';
 
 import '../ascii_tree.dart' as tree;
 import '../command.dart';
 import '../log.dart' as log;
 import '../package.dart';
 import '../utils.dart';
 
 /// Handles the `deps` pub command.
 class DepsCommand extends PubCommand {
@@ skipping 201 matching lines @@
   /// It's very unlikely that the lockfile won't be up-to-date with the pubspec,
   /// but it's possible, since [Entrypoint.assertUpToDate]'s modification time
   /// check can return a false negative. This fails gracefully if that happens.
   Package _getPackage(String name) {
     var package = entrypoint.packageGraph.packages[name];
     if (package != null) return package;
     dataError('The pubspec.yaml file has changed since the pubspec.lock file '
         'was generated, please run "pub get" again.');
   }
 }