MAINTAINERS: wifi: mark zd1211rw as orphan

Last activity from Ulrich is from 2007 so mark the driver orphan.

Remove the zd1211-devs list, I doubt anyone uses it anymore. The webpage seems
to be down so remove that as well.

Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230724104547.3061709-8-kvalo@kernel.org