xfs/220: avoid failure when disabling quota accounting is not supported

xfs/220: avoid failure when disabling quota accounting is not supported

Doing a proper _requires for quotaoff support is rather hard, as we need
to test it on a specific file system.  Instead just use sed to remove
the warning and let the test case pass.  Eventually it should just be
removed entirely.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>