RDMA/hns: Remove redundant judgment of qp_type

Type of qp has been checked in check_send_valid(), so this judgment should
be removed.

Link: https://lore.kernel.org/r/1584674622-52773-11-git-send-email-liweihang@huawei.com
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>