Get rid of all the library tags.

lib/src/operator_matchers.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // 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 matcher.operator_matchers;
-
 import 'interfaces.dart';
 import 'util.dart';
 
 /// This returns a matcher that inverts [matcher] to its logical negation.
 Matcher isNot(matcher) => new _IsNot(wrapMatcher(matcher));
 
 class _IsNot extends Matcher {
   final Matcher _matcher;
 
   const _IsNot(this._matcher);
@@ skipping 87 matching lines @@
     }
 
     matchers = arg0;
   } else {
     matchers =
         [arg0, arg1, arg2, arg3, arg4, arg5, arg6].where((e) => e != null);
   }
 
   return matchers.map((e) => wrapMatcher(e)).toList();
 }