ubifs: remove unused function __ubifs_shash_final

There is no callers in tree, and can be removed.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NMukesh Ojha <mojha@codeaurora.org>
Signed-off-by: NRichard Weinberger <richard@nod.at>

fs/ubifs/auth.c

@@ -146,24 +146,6 @@ struct shash_desc *__ubifs_hash_get_desc(const struct ubifs_info *c)
 	return ubifs_get_desc(c, c->hash_tfm);
 }
 
-/**
- * __ubifs_shash_final - finalize shash
- * @c: UBIFS file-system description object
- * @desc: the descriptor
- * @out: the output hash
- *
- * Simple wrapper around crypto_shash_final(), safe to be called with
- * disabled authentication.
- */
-int __ubifs_shash_final(const struct ubifs_info *c, struct shash_desc *desc,
-			u8 *out)
-{
-	if (ubifs_authenticated(c))
-		return crypto_shash_final(desc, out);
-
-	return 0;
-}
-
 /**
  * ubifs_bad_hash - Report hash mismatches
  * @c: UBIFS file-system description object