sbitmap: Delete old sbitmap_queue_get_shallow()

Since __sbitmap_queue_get_shallow() was introduced in commit c05e66733788
("sbitmap: add sbitmap_get_shallow() operation"), it has not been used.

Delete __sbitmap_queue_get_shallow() and rename public
__sbitmap_queue_get_shallow() -> sbitmap_queue_get_shallow() as it is odd
to have public __foo but no foo at all.

Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1644322024-105340-1-git-send-email-john.garry@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index b7cb96a..2eb3de1 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -557,14 +557,14 @@ unsigned long __sbitmap_queue_get_batch(struct sbitmap_queue *sbq, int nr_tags,
 	return 0;
 }
 
-int __sbitmap_queue_get_shallow(struct sbitmap_queue *sbq,
-				unsigned int shallow_depth)
+int sbitmap_queue_get_shallow(struct sbitmap_queue *sbq,
+			      unsigned int shallow_depth)
 {
 	WARN_ON_ONCE(shallow_depth < sbq->min_shallow_depth);
 
 	return sbitmap_get_shallow(&sbq->sb, shallow_depth);
 }
-EXPORT_SYMBOL_GPL(__sbitmap_queue_get_shallow);
+EXPORT_SYMBOL_GPL(sbitmap_queue_get_shallow);
 
 void sbitmap_queue_min_shallow_depth(struct sbitmap_queue *sbq,
 				     unsigned int min_shallow_depth)