xfs/533: Delete test since directory's extent count can never overflow

xfs/533: Delete test since directory's extent count can never overflow

The maximum file size that can be represented by the data fork extent counter
in the worst case occurs when all extents are 1 block in length and each block
is 1KB in size.

With XFS_MAX_EXTCNT_DATA_FORK_SMALL representing maximum extent count and with
1KB sized blocks, a file can reach upto,
(2^31) * 1KB = 2TB

This is much larger than the theoretical maximum size of a directory
i.e. XFS_DIR2_SPACE_SIZE * 3 = ~96GB.

Since a directory can never overflow its data fork extent counter, the xfs
kernel driver removed code which checked for such a situation before any
directory modification operation could be executed. Instead, the kernel driver
verifies the sanity of directory's data fork extent counter when the inode is
read from disk.

This commit removes the test xfs/533 due to the reasons mentioned above.

Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>