[AdrianD]

There is a depop in \spawn2.h and \spawn2.cpp:

void	Depop();

void Spawn2::Depop() {
	timer.Disable();
	Log.Out(Logs::Detail, Logs::Spawns, "Spawn2 %d: Spawn reset, repop disabled", spawn2_id);
	npcthis = nullptr;
}

I saw this while sifting through potential options.

There is different depop for zone.