- bus_generic_map_intr.9. This has been undead for more than 3 years
following the changes in rev.1.4 of sys/bus.h.
- CONDSPLASSERT.9, SPLASSERT.9. These have been undead since SMPng.
They were even less useful than most section 9 man pages -- the
interfaces described in them have never been used in the FreeBSD
source tree.