net/appletalk: net/ipx/af_ipx.c: net/irda/af_irda.c: Can probably be saved from retirement in drivers/staging if the maintainers still care.
IPX and Appletalk both have active users. They also look fairly fixable as the lock_kernel just maps to a stack private mutex, or in several cases can simply be dropped - its just a push down legacy.
IRDA may well be a candidate for staging