def clear_from_list(list, target_account)
    timeline_key        = key(:list, list.id)
    timeline_status_ids = redis.zrange(timeline_key, 0, -1)
    statuses            = Status.where(id: timeline_status_ids).select(:id, :reblog_of_id, :account_id).to_a
    reblogged_ids       = Status.where(id: statuses.filter_map(&:reblog_of_id), account: target_account).pluck(:id)