[patch] Remove HPUX

[Joel Brobecker]

> There is a LinkedIn HP-UX Users group with almost 4000 members.
> I don't know whether it is active or moribund.  It might be nice
> to see if anyone in the group cares before pulling the plug.

Would you mind sending them a link to this message, and ask if
any of them would like to step up for it? FWIW, I don't have
any idea of the status of the debugger. On PA, the last version
I used was 6.3; on ia64, it was 7.5.

Thank you,
-- 
Joel