Makes away ships no longer shuttle subtypes (#14224)

code/modules/overmap/ships/computers/ship.dm

@@ -128,7 +128,5 @@ somewhere on that shuttle. Subtypes of these can be then used to perform ship ov
 	. = ..()
 	if(current_map.use_overmap && !linked)
 		var/my_sector = map_sectors["[z]"]
-		if (istype(my_sector, /obj/effect/overmap/visitable))
+		if(istype(my_sector, /obj/effect/overmap/visitable/ship))
 			attempt_hook_up(my_sector)
-	if(istype(linked, /obj/effect/overmap/visitable/ship))
-		connected = linked

code/modules/overmap/ships/computers/shuttle.dm

@@ -50,11 +50,10 @@
 	if(href_list["pick"])
 		var/list/possible_d = shuttle.get_possible_destinations()
 		var/D
-		if(possible_d.len)
+		if(length(possible_d))
 			D = input("Choose shuttle destination", "Shuttle Destination") as null|anything in possible_d
 		else
 			to_chat(usr,"<span class='warning'>No valid landing sites in range.</span>")
-		possible_d = shuttle.get_possible_destinations()
 		if(CanInteract(usr, physical_state) && (D in possible_d))
 			shuttle.set_destination(possible_d[D])
 		return TOPIC_REFRESH