debugfs: fix kabi for function debugfs_remove_recursive

hulk inclusion
category: bugfix
bugzilla: 24454
CVE: NA

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debugfs_remove_recursive was changed from a function to an alias to
debugfs_remove in patch "simple_recursive_removal(): kernel-side rm -rf
for ramfs-style filesystems". Change it back to a function.

Signed-off-by: yu kuai <yukuai3@huawei.com>
Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>