Makes landmarks invisible, mobcorpse landmark actually despawns

code/game/objects/effects/landmarks.dm

@@ -5,6 +5,7 @@
 	anchored = 1.0
 	unacidable = 1
 	simulated = 0
+	invisibility = 100
 	var/delete_me = 0
 
 /obj/effect/landmark/New()

code/modules/mob/living/simple_animal/corpse.dm

@@ -78,6 +78,7 @@
 			W.assignment = corpseidjob
 		W.registered_name = M.real_name
 		M.equip_to_slot_or_del(W, slot_wear_id)
+	delete_me = 1
 	qdel(src)