fixes cancelling items from the parts fabricator queue (#7418)

🆑
fix: stops a crisis in the part fabricator point economy by preventing
infinite money generation through cancelling items in the queue
/🆑

yea i got no idea how i missed this either, the points removal now
happens AFTER the item is processed in the queue, so we don't need to
refund any points when removing items from the queue

closes #7416

code/modules/cm_marines/vehicle_part_fabricator.dm

@@ -171,7 +171,6 @@
 			var/datum/build_queue_entry/entry = build_queue[index]
 
 			build_queue.Remove(entry)
-			add_to_point_store(entry.cost)
 			return TRUE
 
 	else