load the emergency shuttle in late mapping (#30854)

* load the emergency shuttle in late mapping

* fix lints

* register the late loading docking port properly

* fix logging

code/modules/shuttle/emergency.dm

@@ -295,12 +295,11 @@
 	return 1
 
 /obj/docking_port/mobile/emergency/Destroy(force)
-	if(force)
-		// This'll make the shuttle subsystem use the backup shuttle.
-		if(SSshuttle.emergency == src)
-			// If we're the selected emergency shuttle
-			SSshuttle.emergencyDeregister()
-
+	if(force && SSshuttle.emergency == src)
+		// If we're the selected emergency shuttle
+		var/msg = "The emergency mobile docking port has been forcibly destroyed. An emergency shuttle may need to be loaded in."
+		stack_trace(msg)
+		log_and_message_admins_no_usr(msg)
 
 	return ..()
 
@@ -630,19 +629,6 @@
 	var/turf/T = pick(turfs)
 	src.loc = T
 
-/obj/docking_port/mobile/emergency/backup
-	name = "backup shuttle"
-	id = "backup"
-	dwidth = 2
-	width = 8
-	height = 8
-
-/obj/docking_port/mobile/emergency/backup/register()
-	var/current_emergency = SSshuttle.emergency
-	..()
-	SSshuttle.emergency = current_emergency
-	SSshuttle.backup_shuttle = src
-
 #undef NOT_BEGUN
 #undef STAGE_1
 #undef STAGE_2

code/modules/shuttle/shuttle_manipulator.dm

@@ -187,12 +187,7 @@
 		if("load")
 			shuttle_and_preview_cooldown = world.time + PREVIEW_OR_SHUTTLE_SPAWN_COOLDOWN
 			var/datum/map_template/shuttle/S = GLOB.shuttle_templates[params["shuttle_id"]]
-			if(existing_shuttle == SSshuttle.backup_shuttle)
-				// TODO make the load button disabled
-				WARNING("The shuttle that the selected shuttle will replace \
-					is the backup shuttle. Backup shuttle is required to be \
-					intact for round sanity.")
-			else if(S)
+			if(S)
 				// If successful, returns the mobile docking port
 				var/obj/docking_port/mobile/mdp = action_load(S)
 				if(mdp)