Update flooding_middleware.py

examples/asynchronous_telebot/middleware/flooding_middleware.py

@@ -1,8 +1,7 @@
 # Just a little example of middleware handlers
 
-from telebot.asyncio_handler_backends import BaseMiddleware
+from telebot.asyncio_handler_backends import BaseMiddleware, CancelUpdate
 from telebot.async_telebot import AsyncTeleBot
-from telebot.async_telebot import CancelUpdate
 bot = AsyncTeleBot('TOKEN')
 
 
@@ -36,4 +35,4 @@ async def start(message):
     await bot.send_message(message.chat.id, 'Hello!')
 
 import asyncio
-asyncio.run(bot.polling())
+asyncio.run(bot.polling())