C-stubdom was meant as a base for building new Mini-OS based stubdoms.
It hasn't seen any work for many years now and creating new stubdoms
should use UNIKRAFT instead of Mini-OS.
So remove c-stubdom.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Teddy Astie <teddy.astie@vates.tech>