btrfs/301: require_no_compress

btrfs/301 makes detailed size calculations to test squota edge cases
which rely on assumptions that break down with compression enabled.

Fix it by disabling the test with compression. Compression + squotas
still gets quite solid test coverage via squotas support in fsck and
normal compression enabled fstests runs.

Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>