Revert "RDMA/hns: Add cap_flag check for check_vf_support()"

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8QLD3



----------------------------------------------------------------------

This reverts commit 2185e651.

Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>