RDMA/hns: Remove unused declaration hns_roce_modify_srq()

Commit c7bcb134 ("RDMA/hns: Add SRQ support for hip08 kernel mode")
declared but never implemented this.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20230804130418.41728-1-yuehaibing@huawei.comReviewed-by: Junxian Huang <huangjunxian6@hisilicon.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -1160,9 +1160,6 @@ int hns_roce_get_umem_bufs(struct hns_roce_dev *hr_dev, dma_addr_t *bufs,
 int hns_roce_create_srq(struct ib_srq *srq,
 			struct ib_srq_init_attr *srq_init_attr,
 			struct ib_udata *udata);
-int hns_roce_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr,
-			enum ib_srq_attr_mask srq_attr_mask,
-			struct ib_udata *udata);
 int hns_roce_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata);
 
 int hns_roce_alloc_xrcd(struct ib_xrcd *ib_xrcd, struct ib_udata *udata);