A question about staging driver like pi433

[Sidong Yang]

Hi all,

I have a question about staging driver. I'm a newbie kernel developer
and I tried contributed some patches for staging drivers. In those
staging drivers, I'm interested in pi433 and wrote some patches for it
about 2 years ago. and then I tried to go deeper for that. I tried to
buy pi433 device but I can't. It seems that no longer available. 

In this case, pi433 should be removed from source tree?
If not, It's okay to send patches for it?

Thanks,
Sidong