Fixing linter- unused import, and a docstring

Author: petyaslavova

redis/client.py

@@ -58,7 +58,6 @@
 from redis.lock import Lock
 from redis.maint_notifications import (
     MaintNotificationsConfig,
-    MaintNotificationsPoolHandler,
 )
 from redis.retry import Retry
 from redis.utils import (

redis/maint_notifications.py

@@ -570,7 +570,7 @@ def set_connection(self, connection: "MaintNotificationsAbstractConnection"):
         self.connection = connection
 
     def get_handler_for_connection(self):
-        # Deep all data that should be shared between connections
+        # Copy all data that should be shared between connections
         # but each connection should have its own pool handler
         # since each connection can be in a different state
         copy = MaintNotificationsPoolHandler(self.pool, self.config)