Get rid of all the library tags.

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//1608993004 .

pkgs/yaml/lib/src/equality.dart

diff --git a/pkgs/yaml/lib/src/equality.dart b/pkgs/yaml/lib/src/equality.dart
index 5408135..a6874cb 100644
--- a/pkgs/yaml/lib/src/equality.dart
+++ b/pkgs/yaml/lib/src/equality.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 yaml.equality;
-
 import 'dart:collection';
 
 import 'package:collection/collection.dart';

pkgs/yaml/lib/src/event.dart

diff --git a/pkgs/yaml/lib/src/event.dart b/pkgs/yaml/lib/src/event.dart
index 96e2f16..a78c6ea 100644
--- a/pkgs/yaml/lib/src/event.dart
+++ b/pkgs/yaml/lib/src/event.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 yaml.event;
-
 import 'package:source_span/source_span.dart';
 
 import 'style.dart';

pkgs/yaml/lib/src/loader.dart

diff --git a/pkgs/yaml/lib/src/loader.dart b/pkgs/yaml/lib/src/loader.dart
index 07ae430..fee7769 100644
--- a/pkgs/yaml/lib/src/loader.dart
+++ b/pkgs/yaml/lib/src/loader.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 yaml.loader;
-
 import 'package:charcode/ascii.dart';
 import 'package:source_span/source_span.dart';
 

pkgs/yaml/lib/src/null_span.dart

diff --git a/pkgs/yaml/lib/src/null_span.dart b/pkgs/yaml/lib/src/null_span.dart
index 06b42f0..43ac685 100644
--- a/pkgs/yaml/lib/src/null_span.dart
+++ b/pkgs/yaml/lib/src/null_span.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 yaml.null_span;
-
 import 'package:source_span/source_span.dart';
 
 /// A [SourceSpan] with no location information.

pkgs/yaml/lib/src/parser.dart

diff --git a/pkgs/yaml/lib/src/parser.dart b/pkgs/yaml/lib/src/parser.dart
index b44043a..d5ed87a 100644
--- a/pkgs/yaml/lib/src/parser.dart
+++ b/pkgs/yaml/lib/src/parser.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 yaml.parser;
-
 import 'package:source_span/source_span.dart';
 import 'package:string_scanner/string_scanner.dart';
 

pkgs/yaml/lib/src/scanner.dart

diff --git a/pkgs/yaml/lib/src/scanner.dart b/pkgs/yaml/lib/src/scanner.dart
index 0ac86dc..15b0219 100644
--- a/pkgs/yaml/lib/src/scanner.dart
+++ b/pkgs/yaml/lib/src/scanner.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 yaml.scanner;
-
 import 'package:collection/collection.dart';
 import 'package:string_scanner/string_scanner.dart';
 import 'package:source_span/source_span.dart';

pkgs/yaml/lib/src/style.dart

diff --git a/pkgs/yaml/lib/src/style.dart b/pkgs/yaml/lib/src/style.dart
index 6305fce..d235404 100644
--- a/pkgs/yaml/lib/src/style.dart
+++ b/pkgs/yaml/lib/src/style.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 yaml.style;
-
 /// An enum of source scalar styles.
 class ScalarStyle {
   /// No source style was specified.

pkgs/yaml/lib/src/token.dart

diff --git a/pkgs/yaml/lib/src/token.dart b/pkgs/yaml/lib/src/token.dart
index 20ae547..5f91ce9 100644
--- a/pkgs/yaml/lib/src/token.dart
+++ b/pkgs/yaml/lib/src/token.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 yaml.token;
-
 import 'package:source_span/source_span.dart';
 
 import 'style.dart';

pkgs/yaml/lib/src/utils.dart

diff --git a/pkgs/yaml/lib/src/utils.dart b/pkgs/yaml/lib/src/utils.dart
index 445221f..c1a58e4 100644
--- a/pkgs/yaml/lib/src/utils.dart
+++ b/pkgs/yaml/lib/src/utils.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 yaml.utils;
-
 import 'package:source_span/source_span.dart';
 
 /// A pair of values.

pkgs/yaml/lib/src/yaml_document.dart

diff --git a/pkgs/yaml/lib/src/yaml_document.dart b/pkgs/yaml/lib/src/yaml_document.dart
index 4c249a0..61a82e7 100644
--- a/pkgs/yaml/lib/src/yaml_document.dart
+++ b/pkgs/yaml/lib/src/yaml_document.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 yaml.yaml_document;
-
 import 'dart:collection';
 
 import 'package:source_span/source_span.dart';

pkgs/yaml/lib/src/yaml_exception.dart

diff --git a/pkgs/yaml/lib/src/yaml_exception.dart b/pkgs/yaml/lib/src/yaml_exception.dart
index 8689953..04067ee 100644
--- a/pkgs/yaml/lib/src/yaml_exception.dart
+++ b/pkgs/yaml/lib/src/yaml_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 yaml.exception;
-
 import 'package:source_span/source_span.dart';
 
 /// An error thrown by the YAML processor.

pkgs/yaml/lib/src/yaml_node.dart

diff --git a/pkgs/yaml/lib/src/yaml_node.dart b/pkgs/yaml/lib/src/yaml_node.dart
index 99f7515..2b615d3 100644
--- a/pkgs/yaml/lib/src/yaml_node.dart
+++ b/pkgs/yaml/lib/src/yaml_node.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 yaml.yaml_node;
-
 import 'dart:collection' as collection;
 
 import 'package:collection/collection.dart';

pkgs/yaml/lib/src/yaml_node_wrapper.dart

diff --git a/pkgs/yaml/lib/src/yaml_node_wrapper.dart b/pkgs/yaml/lib/src/yaml_node_wrapper.dart
index d7146c4..a0922ed 100644
--- a/pkgs/yaml/lib/src/yaml_node_wrapper.dart
+++ b/pkgs/yaml/lib/src/yaml_node_wrapper.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 yaml.yaml_node_wrapper;
-
 import 'dart:collection';
 
 import 'package:collection/collection.dart' as pkg_collection;

pkgs/yaml/lib/yaml.dart

diff --git a/pkgs/yaml/lib/yaml.dart b/pkgs/yaml/lib/yaml.dart
index 0d48dea..9772464 100644
--- a/pkgs/yaml/lib/yaml.dart
+++ b/pkgs/yaml/lib/yaml.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 yaml;
-
 import 'src/loader.dart';
 import 'src/style.dart';
 import 'src/yaml_document.dart';

pkgs/yaml/test/utils.dart

diff --git a/pkgs/yaml/test/utils.dart b/pkgs/yaml/test/utils.dart
index a2d2019..e1d4b64 100644
--- a/pkgs/yaml/test/utils.dart
+++ b/pkgs/yaml/test/utils.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 yaml.test.utils;
-
 import 'package:test/test.dart';
 import 'package:yaml/src/equality.dart' as equality;
 import 'package:yaml/yaml.dart';

pkgs/yaml/test/yaml_node_wrapper_test.dart

diff --git a/pkgs/yaml/test/yaml_node_wrapper_test.dart b/pkgs/yaml/test/yaml_node_wrapper_test.dart
index b76a73b..8cb8cfa 100644
--- a/pkgs/yaml/test/yaml_node_wrapper_test.dart
+++ b/pkgs/yaml/test/yaml_node_wrapper_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 yaml.node_wrapper_test;
-
 import 'package:source_span/source_span.dart';
 import 'package:test/test.dart';
 import 'package:yaml/yaml.dart';

pkgs/yaml/test/yaml_test.dart

diff --git a/pkgs/yaml/test/yaml_test.dart b/pkgs/yaml/test/yaml_test.dart
index c4601d5..d2f5d19 100644
--- a/pkgs/yaml/test/yaml_test.dart
+++ b/pkgs/yaml/test/yaml_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 yaml.test;
-
 import 'package:test/test.dart';
 import 'package:yaml/yaml.dart';