Revert "[Huawei] io_uring:drop identity before creating a private one"

Offering: HULK
hulk inclusion
category: feature
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6BTWC



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

This reverts commit 6d9aaec1.

We need to apply patch 788d0824269bef (io_uring: import 5.15-stable
io_uring) to move io_uring to separate directory and solve
the problem of CVE-2023-0240.
This patch fix a uaf problem of io_identity, and it can be reverted
since io_identity is removed in patch 788d0824269bef.

Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Wang Weiyang <wangweiyang2@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>