RDMA/hns: remove redundant print in hns_roce_v2_ceq_int()

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

There is no need to tell users when eq->cons_index is overflow, we
just set it back to zero.

Feature or Bugfix: Bugfix

Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Reviewed-by: liyangyang20 <liyangyang20@huawei.com>
Reviewed-by: liuyixian <liuyixian@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>