Remove useless local variables last_read_point and last_txw_point and
the code related.
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>