Remove the operation of optical modules in the link function, because
when device binds from dpdk to kernel, it will be linked failed. This
function does not take effect in cable mode, therefore, optimization
is required.
Fixes: 54ac338699 ("net/hinic: set link down and up")
Cc: stable@dpdk.org
Signed-off-by: Guoyang Zhou <zhouguoyang@huawei.com>