Fix mypy

Author: OscarVanL

ninja/throttling.py

@@ -241,7 +241,7 @@ def get_cache_key(self, request: HttpRequest) -> str:
             ident = hashlib.sha256(str(request.auth).encode()).hexdigest()  # type: ignore
             # TODO: ^maybe auth should have an attribute that developer can overwrite
         else:
-            ident = self.client_ip(request)  # type: ignore
+            ident = self.client_ip(request)
 
         return self.cache_format % {"scope": self.scope, "ident": ident}