fs: remove unused helper

The grab_super() helper is now only used by grab_super_dead(). Merge the
two helpers into one.

Link: https://lore.kernel.org/r/20231024-vfs-super-freeze-v2-8-599c19f4faac@kernel.org
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2023-10-24 15:01:14 +02:00
commit 97cbed04e7
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