Remove duplicated method.

Author: rennokki

src/PubSub/Drivers/RedisClient.php

@@ -288,17 +288,6 @@ public function channelMemberCounts($appId, array $channelNames): PromiseInterfa
             });
     }
 
-    /**
-     * Get the amount of unique connections.
-     *
-     * @param  mixed  $appId
-     * @return null|int
-     */
-    public function getLocalConnectionsCount($appId)
-    {
-        return null;
-    }
-
     /**
      * Get the amount of connections aggregated on multiple instances.
      *