fstests: don't test -o norecovery in btrfs/220

This is a deprecated option and it's going away with the new mount api
patches, so remove this from the test.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>