net/tcp: remove unnecessary clear for device buffer
which has been cleared in tcp_datahandler()
@@ -86,8 +86,6 @@ tcp_data_event(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn,
dev->d_iob->io_offset);
net_incr32(conn->rcvseq, recvlen);
-
- netdev_iob_clear(dev);
}
/* In any event, the new data has now been handled */
