xfs: Remove unused function xrep_dir_self_parent

The function are defined in the dir_repair.c file, but not called
elsewhere, so delete the unused function.

fs/xfs/scrub/dir_repair.c:186:1: warning: unused function 'xrep_dir_self_parent'.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=8867Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>

fs/xfs/scrub/dir_repair.c

@@ -204,27 +204,6 @@ xrep_setup_directory(
 	return 0;
 }
 
-/*
- * If we're the root of a directory tree, we are our own parent.  If we're an
- * unlinked directory, the parent /won't/ have a link to us.  Set the parent
- * directory to the root for both cases.  Returns NULLFSINO if we don't know
- * what to do.
- */
-static inline xfs_ino_t
-xrep_dir_self_parent(
-	struct xrep_dir		*rd)
-{
-	struct xfs_scrub	*sc = rd->sc;
-
-	if (sc->ip->i_ino == sc->mp->m_sb.sb_rootino)
-		return sc->mp->m_sb.sb_rootino;
-
-	if (VFS_I(sc->ip)->i_nlink == 0)
-		return sc->mp->m_sb.sb_rootino;
-
-	return NULLFSINO;
-}
-
 /*
  * Look up the dotdot entry and confirm that it's really the parent.
  * Returns NULLFSINO if we don't know what to do.