Get rid of all the library tags.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1587433002 .
diff --git a/lib/shelf_web_socket.dart b/lib/shelf_web_socket.dart
index 8aac366..0866f1f 100644
--- a/lib/shelf_web_socket.dart
+++ b/lib/shelf_web_socket.dart
@@ -2,8 +2,6 @@
 // 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_web_socket;
-
 import 'package:shelf/shelf.dart';
 
 import 'src/web_socket_handler.dart';
diff --git a/lib/src/web_socket_handler.dart b/lib/src/web_socket_handler.dart
index 7ab8e7e..ea27c61 100644
--- a/lib/src/web_socket_handler.dart
+++ b/lib/src/web_socket_handler.dart
@@ -2,8 +2,6 @@
 // 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_web_socket.web_socket_handler;
-
 import 'dart:convert';
 
 import 'package:http_parser/http_parser.dart';
diff --git a/test/web_socket_test.dart b/test/web_socket_test.dart
index 06c0be3..95743d6 100644
--- a/test/web_socket_test.dart
+++ b/test/web_socket_test.dart
@@ -2,8 +2,6 @@
 // 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_web_socket.web_socket_test;
-
 import 'dart:io';
 
 import 'package:http/http.dart' as http;