Fix rate limit middleware

backend/src/middleware/rate_limit.py

@@ -1,11 +1,9 @@
 """
 Rate Limiting Middleware
 """
-from fastapi import Request
 from slowapi import Limiter
 from slowapi.util import get_remote_address
 from slowapi.middleware import SlowAPIMiddleware
-from src.config.settings import settings
 
 limiter = Limiter(key_func=get_remote_address)