Get rid of all the library tags.

lib/src/utils.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_proxy.utils;
-
 import 'dart:async';
 
 // TODO(nweiz): remove this when issue 7786 is fixed.
 /// Pipes all data and errors from [stream] into [sink].
 ///
 /// When [stream] is done, the returned [Future] is completed and [sink] is
 /// closed if [closeSink] is true.
 ///
 /// When an error occurs on [stream], that error is passed to [sink]. If
 /// [cancelOnError] is true, [Future] will be completed successfully and no
 /// more data or errors will be piped from [stream] to [sink]. If
 /// [cancelOnError] and [closeSink] are both true, [sink] will then be
 /// closed.
 Future store(Stream stream, EventSink sink,
     {bool cancelOnError: true, bool closeSink: true}) {
   var completer = new Completer();
   stream.listen(sink.add, onError: (e, stackTrace) {
     sink.addError(e, stackTrace);
     if (cancelOnError) {
       completer.complete();
       if (closeSink) sink.close();
     }
   }, onDone: () {
     if (closeSink) sink.close();
     completer.complete();
   }, cancelOnError: cancelOnError);
   return completer.future;
 }