Remove these unused fields since nobody uses them.  They should have
been removed years ago in a different cleanup series from Christoph
Hellwig.
Fixes: daf83964a3681 ("xfs: move the per-fork nextents fields into struct xfs_ifork")
Fixes: f7e67b20ecbbc ("xfs: move the fork format fields into struct xfs_ifork")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
 
        /* Number of bytes available for this fork in the inode. */
        unsigned int            if_fork_size;
-
-       /* Fork format. */
-       unsigned int            if_format;
-
-       /* Number of records. */
-       unsigned int            if_extents;
 };
 
 /* Cursor interactions with fake roots for inode-rooted btrees. */