xfs/419: remove irrelevant swapfile test

Since the advent of iomap_swapfile_activate in XFS, we actually /do/
support having swap files on the realtime device.  Remove this test.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
3 files changed