RFC: remove UMAPFS

[Xin LI]

Rong-en Fan wrote:
> The UMAPFS was disconnected from build 3 years ago.
> It is seriously broken and no one is going to work on it.
> Therefore, I think we should remove UMAPFS from
> cvs and put in in Attic. Any objections?

Given that it's not available on 6.x I assume that nobody would complain
about its removal.  I think you can just go ahead and axe it if re@ agrees.

Cheers,