RDMA/hns: Remove the unused hns_roce_bitmap_alloc_range function

mainline inclusion
from mainline-v5.12-rc1
commit 24977edb
category: bugfix
bugzilla: 174002
CVE:NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24977edbb5c5e342bf63c533f43bdcb55d48d9fd

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The function is no longer used.

Link: https://lore.kernel.org/r/1623325814-55737-2-git-send-email-liweihang@huawei.com


Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: wangsirong <wangsirong@huawei.com>
Reviewed-by: ChunZhi Hu <huchunzhi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>