jbd2: clean up misleading comments for jbd2_fc_release_bufs

This comments was for jbd2_fc_wait_bufs, not for jbd2_fc_release_bufs.
Remove this misleading comments.
Signed-off-by: yangerkun <yangerkun@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210608141236.459441-1-yangerkun@huawei.comSigned-off-by: Theodore Ts'o <tytso@mit.edu>

fs/jbd2/journal.c

@@ -934,10 +934,6 @@ int jbd2_fc_wait_bufs(journal_t *journal, int num_blks)
 }
 EXPORT_SYMBOL(jbd2_fc_wait_bufs);
 
-/*
- * Wait on fast commit buffers that were allocated by jbd2_fc_get_buf
- * for completion.
- */
 int jbd2_fc_release_bufs(journal_t *journal)
 {
 	struct buffer_head *bh;
@@ -945,10 +941,6 @@ int jbd2_fc_release_bufs(journal_t *journal)
 
 	j_fc_off = journal->j_fc_off;
 
-	/*
-	 * Wait in reverse order to minimize chances of us being woken up before
-	 * all IOs have completed
-	 */
 	for (i = j_fc_off - 1; i >= 0; i--) {
 		bh = journal->j_fc_wbuf[i];
 		if (!bh)