[XFS] Remove a couple of no-longer-used macros/types from XFS.

SGI-PV: 950556
SGI-Modid: xfs-linux-melb:xfs-kern:25377a
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/xfs_mount.h

@@ -505,11 +505,6 @@ xfs_preferred_iosize(xfs_mount_t *mp)
 #define XFS_CORRUPT_INCORE	0x8	/* Corrupt in-memory data structures */
 #define XFS_SHUTDOWN_REMOTE_REQ 0x10	/* Shutdown came from remote cell */
 
-/*
- * xflags for xfs_syncsub
- */
-#define XFS_XSYNC_RELOC		0x01
-
 /*
  * Flags for xfs_mountfs
  */