Get rid of all the library tags.

lib/src/ascii_tree.dart

 // Copyright (c) 2012, 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.
 
 /// A simple library for rendering tree-like structures in ASCII.
-library pub.ascii_tree;
-
 import 'package:path/path.dart' as path;
 
 import 'log.dart' as log;
 import 'utils.dart';
 
 /// Draws a tree for the given list of files. Given files like:
 ///
 ///     TODO
 ///     example/console_example.dart
 ///     example/main.dart
@@ skipping 140 matching lines @@
     buffer.write(prefix);
     buffer.write(_getPrefix(name == null, isLast));
     buffer.writeln(log.gray('| (${childNames.length - 6} more...)'));
 
     // Show the last few.
     drawChild(false, childNames[childNames.length - 3]);
     drawChild(false, childNames[childNames.length - 2]);
     drawChild(true, childNames[childNames.length - 1]);
   }
 }