This patch removes unnecessary MAC address validity check operation in
the .mac_addr_set ops implementation function named
hns3_set_default_mac_addr and hns3vf_set_default_mac_addr, because it
has been guaranteed that input parameter named mac_addr is valid address
in the rte layer of DPDK framework.
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com> Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>