Get rid of all the library tags.

lib/src/command/run.dart

 // Copyright (c) 2014, 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 pub.command.run;
-
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 import 'package:path/path.dart' as p;
 
 import '../command.dart';
 import '../executable.dart';
 import '../io.dart';
 import '../utils.dart';
 
@@ skipping 48 matching lines @@
       mode = BarbackMode.DEBUG;
     } else {
       mode = BarbackMode.RELEASE;
     }
 
     var exitCode = await runExecutable(entrypoint, package, executable, args,
         checked: argResults['checked'], mode: mode);
     await flushThenExit(exitCode);
   }
 }