Removes most hard-coded z level checks

code/modules/admin/verbs/debug.dm

@@ -373,8 +373,7 @@ But you can call procs that are of type /mob/living/carbon/human/proc/ for that
 
 	for(var/I in singularities)
 		var/obj/singularity/S = I
-		// TODO: Tie into space manager
-		if(S.z == ZLEVEL_CENTCOMM  || S.z >= MAX_Z)
+		if(!is_level_reachable(S.z))
 			continue
 		qdel(S)
 	log_admin("[key_name(src)] has deleted all Singularities and Tesla orbs.")