Merge pull request #62 from Dustyposa/del_useless_code

delete useless code

slowapi/util.py

@@ -1,7 +1,3 @@
-from datetime import datetime, timedelta
-from email.utils import parsedate_tz
-from typing import Optional
-
 from starlette.requests import Request
 
 
@@ -13,8 +9,7 @@ def get_ipaddr(request: Request) -> str:
      provided by uvicorn's ProxyHeadersMiddleware.
     """
     if "X_FORWARDED_FOR" in request.headers:
-        r = request.headers["X_FORWARDED_FOR"]
-        return r
+        return request.headers["X_FORWARDED_FOR"]
     else:
         return request.client.host or "127.0.0.1"