fix style issues

Author: rmorshea

src/idom/backend/tornado.py

@@ -10,7 +10,6 @@
 
 from tornado.httpserver import HTTPServer
 from tornado.httputil import HTTPServerRequest
-from tornado.ioloop import IOLoop
 from tornado.log import enable_pretty_logging
 from tornado.platform.asyncio import AsyncIOMainLoop
 from tornado.web import Application, RequestHandler, StaticFileHandler

src/idom/core/hooks.py

@@ -27,7 +27,6 @@
 from idom.config import IDOM_DEBUG_MODE
 from idom.utils import Ref
 
-from ._f_back import f_module_name
 from ._thread_local import ThreadLocal
 from .types import ComponentType, Key, VdomDict
 from .vdom import vdom

src/idom/core/vdom.py

@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import inspect
 import logging
 from typing import Any, Dict, List, Mapping, Optional, Sequence, Tuple, cast
 

tests/test_core/test_hooks.py

@@ -1,5 +1,4 @@
 import asyncio
-import re
 
 import pytest