Revert "hostfs: fix string handling in __dentry_name()"

This reverts commit 86ec56b2 which is
commit 60a60024 upstream.

It is reported to cause build issues and odds are the root problem isn't
really an issue on the 6.6.y branch anyway.  If it is, someone can
provide a working set of backported patches.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/cd10a924-ae65-4b02-aea2-e629947ca7a3@roeck-us.net


Cc: Hongbo Li <lihongbo22@huawei.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>