Get rid of all the library tags.

lib/src/validator/size.dart

 // Copyright (c) 2013, 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.validator.size;
-
 import 'dart:async';
 import 'dart:math' as math;
 
 import '../entrypoint.dart';
 import '../validator.dart';
 
 /// The maximum size of the package to upload (100 MB).
 const _MAX_SIZE = 100 * 1024 * 1024;
 
 /// A validator that validates that a package isn't too big.
 class SizeValidator extends Validator {
   final Future<int> packageSize;
 
   SizeValidator(Entrypoint entrypoint, this.packageSize)
     : super(entrypoint);
 
   Future validate() {
     return packageSize.then((size) {
       if (size <= _MAX_SIZE) return;
       var sizeInMb = (size / math.pow(2, 20)).toStringAsPrecision(4);
       errors.add("Your package is $sizeInMb MB. Hosted packages must be "
           "smaller than 100 MB.");
     });
   }
 }