xfs: remove the unused XFS_MAXLINK_1 define

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>

fs/xfs/libxfs/xfs_format.h

@@ -930,10 +930,8 @@ static inline uint xfs_dinode_size(int version)
 /*
  * The 32 bit link count in the inode theoretically maxes out at UINT_MAX.
  * Since the pathconf interface is signed, we use 2^31 - 1 instead.
- * The old inode format had a 16 bit link count, so its maximum is USHRT_MAX.
  */
 #define	XFS_MAXLINK		((1U << 31) - 1U)
-#define	XFS_MAXLINK_1		65535U
 
 /*
  * Values for di_format