twobit.cfg: Remove longhaul builder.
twobit.cfg: Remove longhaul builder.

This was an ancient version of Debian needed to build OXT. Don't need it
any longer.

Signed-off-by: Philip Tricca <53a58e9d5471ed7186e9729c1e05c03a7332643a@twobit.us>

flihp/twobit-buildbot,flihp/twobit-buildbot