Get rid of all the library tags.

lib/src/runner/application_exception.dart

Index: lib/src/runner/application_exception.dart
diff --git a/lib/src/runner/application_exception.dart b/lib/src/runner/application_exception.dart
index 2dc4469516661515cd8e8f43fa043c997b058703..919d3ec4d39af1a5e9c7f861d31cfe7f142c6080 100644
--- a/lib/src/runner/application_exception.dart
+++ b/lib/src/runner/application_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 test.runner.application_exception;
-
 /// An expected exception caused by user-controllable circumstances.
 class ApplicationException implements Exception {
   final String message;