Unblock an item and/or reset it's fail count

        :param str item: The item to unblock

def unblock(self, item: str) -> None:
        """
        Unblock an item and/or reset it's fail count

        :param str item: The item to unblock
        """
        assert item is not None
        item = self._encode_item(item)
        watchlist_key = self.__redis_conf['watchlist_template'].format(item)
        blacklist_key = self.__redis_conf['blacklist_template'].format(item)
        connection = self.__get_connection()
        connection.delete(watchlist_key)
        connection.delete(blacklist_key)
        BlackRed.__release_connection(connection)