net: hns3: Remove repeat statistic of rx_errors

net: hns3: Remove repeat statistic of rx_errors

BugLink: http://bugs.launchpad.net/bugs/1756097
The igu_rx_err_pkt indicates the same error with
mac_rx_fcs_err_pkt_num, so remove it.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 7ea5cbdc66097f501398ef4810f0c94f4120647f)
Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>