xfsdump: remove obsolete code for handling xenix named pipes

We can safely drop support for XENIX named pipes (S_IFNAM) at this
point, since this was never implemented in Linux.

Signed-off-by: Anthony Iliopoulos <ailiop@suse.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

5 files changed