Get rid of all the library tags.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1583683002 .
diff --git a/lib/shelf.dart b/lib/shelf.dart
index 238f94b..905d9cd 100644
--- a/lib/shelf.dart
+++ b/lib/shelf.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;
-
 export 'src/cascade.dart';
 export 'src/handler.dart';
 export 'src/handlers/logger.dart';
diff --git a/lib/shelf_io.dart b/lib/shelf_io.dart
index c2813c7..af6780e 100644
--- a/lib/shelf_io.dart
+++ b/lib/shelf_io.dart
@@ -15,8 +15,6 @@
 /// for more information.
 ///
 /// [bufferOutput]: https://api.dartlang.org/apidocs/channels/stable/dartdoc-viewer/dart:io.HttpResponse#id_bufferOutput
-library shelf.io;
-
 import 'dart:async';
 import 'dart:io';
 
diff --git a/lib/src/body.dart b/lib/src/body.dart
index 5d39be5..87e0483 100644
--- a/lib/src/body.dart
+++ b/lib/src/body.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.body;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/lib/src/cascade.dart b/lib/src/cascade.dart
index cf57478..412e7a3 100644
--- a/lib/src/cascade.dart
+++ b/lib/src/cascade.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.cascade;
-
 import 'dart:async';
 
 import 'handler.dart';
diff --git a/lib/src/handler.dart b/lib/src/handler.dart
index 6ac3d31..4bb08e9 100644
--- a/lib/src/handler.dart
+++ b/lib/src/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.typedef;
-
 import 'request.dart';
 
 /// The signature of a function which handles a [Request].
diff --git a/lib/src/handlers/logger.dart b/lib/src/handlers/logger.dart
index a4fbc65..9f76f6c 100644
--- a/lib/src/handlers/logger.dart
+++ b/lib/src/handlers/logger.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.handlers.logger;
-
 import 'dart:async';
 
 import 'package:stack_trace/stack_trace.dart';
diff --git a/lib/src/hijack_exception.dart b/lib/src/hijack_exception.dart
index 56d5cec..eecf9d8 100644
--- a/lib/src/hijack_exception.dart
+++ b/lib/src/hijack_exception.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.hijack_exception;
-
 /// An exception used to indicate that a request has been hijacked.
 ///
 /// This shouldn't be captured by any code other than the Shelf adapter that
diff --git a/lib/src/io_server.dart b/lib/src/io_server.dart
index 854e341..ac8b3a0 100644
--- a/lib/src/io_server.dart
+++ b/lib/src/io_server.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.io_server;
-
 import 'dart:async';
 
 import 'dart:io';
diff --git a/lib/src/message.dart b/lib/src/message.dart
index ac6e6ee..16965e1 100644
--- a/lib/src/message.dart
+++ b/lib/src/message.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.message;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/lib/src/middleware.dart b/lib/src/middleware.dart
index 1d503d0..3eac69f 100644
--- a/lib/src/middleware.dart
+++ b/lib/src/middleware.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.middleware;
-
 import 'dart:async';
 
 import 'request.dart';
diff --git a/lib/src/pipeline.dart b/lib/src/pipeline.dart
index 016e5fc..ff5b14f 100644
--- a/lib/src/pipeline.dart
+++ b/lib/src/pipeline.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.pipeline;
-
 import 'handler.dart';
 import 'middleware.dart';
 
diff --git a/lib/src/request.dart b/lib/src/request.dart
index 5c5f44c..29e897a 100644
--- a/lib/src/request.dart
+++ b/lib/src/request.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.request;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/lib/src/response.dart b/lib/src/response.dart
index 79f8994..7945526 100644
--- a/lib/src/response.dart
+++ b/lib/src/response.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.response;
-
 import 'dart:convert';
 
 import 'package:http_parser/http_parser.dart';
diff --git a/lib/src/server.dart b/lib/src/server.dart
index 6a5c9d7..e3c216b 100644
--- a/lib/src/server.dart
+++ b/lib/src/server.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.server;
-
 import 'dart:async';
 
 import 'handler.dart';
diff --git a/lib/src/server_handler.dart b/lib/src/server_handler.dart
index 77b4ddc..fbe765a 100644
--- a/lib/src/server_handler.dart
+++ b/lib/src/server_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.server_handler;
-
 import 'dart:async';
 
 import 'package:async/async.dart';
diff --git a/lib/src/shelf_unmodifiable_map.dart b/lib/src/shelf_unmodifiable_map.dart
index 46b4223..18884e6 100644
--- a/lib/src/shelf_unmodifiable_map.dart
+++ b/lib/src/shelf_unmodifiable_map.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.shelf_unmodifiable_map;
-
 import 'dart:collection';
 
 import 'package:http_parser/http_parser.dart';
diff --git a/lib/src/util.dart b/lib/src/util.dart
index 6d9f2c1..822395e 100644
--- a/lib/src/util.dart
+++ b/lib/src/util.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.util;
-
 import 'dart:async';
 
 /// Like [new Future], but avoids around issue 11911 by using [new Future.value]
diff --git a/test/cascade_test.dart b/test/cascade_test.dart
index 7c73fcb..6b1df62 100644
--- a/test/cascade_test.dart
+++ b/test/cascade_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.cascade_test;
-
 import 'dart:async';
 
 import 'package:shelf/shelf.dart';
diff --git a/test/create_middleware_test.dart b/test/create_middleware_test.dart
index b1058db..2ec5488 100644
--- a/test/create_middleware_test.dart
+++ b/test/create_middleware_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.create_middleware_test;
-
 import 'dart:async';
 
 import 'package:shelf/shelf.dart';
diff --git a/test/hijack_test.dart b/test/hijack_test.dart
index a5dc852..82b33eb 100644
--- a/test/hijack_test.dart
+++ b/test/hijack_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.hijack_test;
-
 import 'dart:async';
 
 import 'package:test/test.dart';
diff --git a/test/log_middleware_test.dart b/test/log_middleware_test.dart
index d8fde15..c7f448d 100644
--- a/test/log_middleware_test.dart
+++ b/test/log_middleware_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.log_middleware_test;
-
 import 'package:shelf/shelf.dart';
 import 'package:test/test.dart';
 
diff --git a/test/message_change_test.dart b/test/message_change_test.dart
index ed41de2..20f7740 100644
--- a/test/message_change_test.dart
+++ b/test/message_change_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.message_change_test;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/test/message_test.dart b/test/message_test.dart
index ddd6777..7caad9a 100644
--- a/test/message_test.dart
+++ b/test/message_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.message_test;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/test/pipeline_test.dart b/test/pipeline_test.dart
index 314ba20..20b601a 100644
--- a/test/pipeline_test.dart
+++ b/test/pipeline_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.pipeline_test;
-
 import 'package:shelf/shelf.dart';
 import 'package:test/test.dart';
 
diff --git a/test/request_test.dart b/test/request_test.dart
index d7d2031..6701355 100644
--- a/test/request_test.dart
+++ b/test/request_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.request_test;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/test/response_test.dart b/test/response_test.dart
index 57c5c1c..7b22a21 100644
--- a/test/response_test.dart
+++ b/test/response_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.response_test;
-
 import 'dart:async';
 import 'dart:convert';
 
diff --git a/test/test_util.dart b/test/test_util.dart
index 3df1e56..e3863ed 100644
--- a/test/test_util.dart
+++ b/test/test_util.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.test_util;
-
 import 'dart:async';
 
 import 'package:shelf/shelf.dart';