Fixing linters

Author: barshaul

redis/cluster.py

@@ -6,7 +6,7 @@
 from collections import OrderedDict
 from typing import Any, Callable, Dict, List, Optional, Tuple, Union
 
-from redis.backoff import default_backoff, NoBackoff
+from redis.backoff import default_backoff
 from redis.client import CaseInsensitiveDict, PubSub, Redis, parse_scan
 from redis.commands import READ_COMMANDS, CommandsParser, RedisClusterCommands
 from redis.connection import ConnectionPool, DefaultParser, Encoder, parse_url