Get rid of all the library tags.

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//1578413003 .
diff --git a/lib/glob.dart b/lib/glob.dart
index 2d2a83f..82c8a12 100644
--- a/lib/glob.dart
+++ b/lib/glob.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 glob;
-
 import 'dart:async';
 import 'dart:io';
 
diff --git a/lib/src/ast.dart b/lib/src/ast.dart
index 1913477..d1cfe63 100644
--- a/lib/src/ast.dart
+++ b/lib/src/ast.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 glob.ast;
-
 import 'package:path/path.dart' as p;
 import 'package:collection/collection.dart';
 
diff --git a/lib/src/list_tree.dart b/lib/src/list_tree.dart
index 3667d63..779bff5 100644
--- a/lib/src/list_tree.dart
+++ b/lib/src/list_tree.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 glob.list_tree;
-
 import 'dart:io';
 import 'dart:async';
 
diff --git a/lib/src/parser.dart b/lib/src/parser.dart
index 5dac146..ab399a5 100644
--- a/lib/src/parser.dart
+++ b/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 glob.single_component;
-
 import 'package:path/path.dart' as p;
 import 'package:string_scanner/string_scanner.dart';
 
diff --git a/lib/src/stream_pool.dart b/lib/src/stream_pool.dart
index 6417513..817d57a 100644
--- a/lib/src/stream_pool.dart
+++ b/lib/src/stream_pool.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 glob.stream_pool;
-
 import 'dart:async';
 
 /// A pool of streams whose events are unified and emitted through a central
diff --git a/lib/src/utils.dart b/lib/src/utils.dart
index f17f2ed..94f6a05 100644
--- a/lib/src/utils.dart
+++ b/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 glob.utils;
-
 import 'package:path/path.dart' as p;
 
 /// A range from [min] to [max], inclusive.