Removed flake8, black and isort; moving towards ruff default settings instead.

tests/performance/aiohttp/simple_server.py

@@ -5,10 +5,8 @@ import sys
 
 import ujson as json
 import uvloop
-
 from aiohttp import web
 
-
 loop = uvloop.new_event_loop()
 asyncio.set_event_loop(loop)