Get rid of all the library tags.

lib/src/handlers/logger.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 shelf.handlers.logger;
-
 import 'dart:async';
 
 import 'package:stack_trace/stack_trace.dart';
 
 import '../hijack_exception.dart';
 import '../middleware.dart';
 
 /// Middleware which prints the time of the request, the elapsed time for the
 /// inner handlers, the response's status code and the request URI.
 ///
@@ skipping 59 matching lines @@
   return '$msg\n$chain';
 }
 
 void _defaultLogger(String msg, bool isError) {
   if (isError) {
     print('[ERROR] $msg');
   } else {
     print(msg);
   }
 }