net: hns3: remove two unused macros in hclgevf_cmd.c

Macro hclgevf_ring_to_dma_dir and hclgevf_is_csq defined in
hclgevf_cmd.c, but not used, so remove them.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>