refactor: lint fix

src/entities/engine/engine.py

@@ -1,4 +1,3 @@
-import os
 from sqlalchemy.ext.asyncio import (
     create_async_engine,
     async_sessionmaker,

src/entities/models/dto.py

@@ -1,4 +1,4 @@
-from typing import List, Dict, Any, Set, Optional
+from typing import List, Dict, Any, Set
 from pydantic import BaseModel
 from starlette.authentication import BaseUser
 

src/oauth2/oauth2_admin.py

@@ -1,7 +1,5 @@
-import ast
 from http import HTTPStatus
 import logging
-import os
 from typing import Dict, Any, Set
 
 import jose.jwt