Remove trailing semicolon at the end of a method definition

ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h"
 
 #include <memory>
 
 #include "components/reading_list/core/reading_list_model.h"
 #import "ios/chrome/browser/ui/reading_list/reading_list_menu_notification_delegate.h"
@@ skipping 35 matching lines @@
   void ReadingListModelLoaded(const ReadingListModel* model) override {}
 
   void ReadingListModelBeganBatchUpdates(
       const ReadingListModel* model) override {}
 
   void ReadingListModelCompletedBatchUpdates(
       const ReadingListModel* model) override {
     [owner_ readingListModelCompletedBatchUpdates:model];
   }
 
-  void ReadingListModelBeingDeleted(const ReadingListModel* model) override{};
+  void ReadingListModelBeingDeleted(const ReadingListModel* model) override {}
 
   void ReadingListDidApplyChanges(ReadingListModel* model) override {
     [owner_ readingListModelCompletedBatchUpdates:model];
   }
 
  private:
   ReadingListMenuNotifier* owner_;  // weak, owns us
 };
 
 @implementation ReadingListMenuNotifier
@@ skipping 24 matching lines @@
 
 - (NSInteger)readingListUnreadCount {
   return _readingListModel->unread_size();
 }
 
 - (BOOL)readingListUnseenItemsExist {
   return _readingListModel->unseen_size() > 0;
 }
 
 @end