Fix: When loading old timetabled saves, also reset cached timetable duration

src/saveload/order_sl.cpp

@@ -182,10 +182,6 @@ static void Load_ORDR()
 		while ((index = SlIterateArray()) != -1) {
 			Order *order = new (index) Order();
 			SlObject(order, GetOrderDescription());
-			if (IsSavegameVersionBefore(SLV_190)) {
-				order->SetTravelTimetabled(order->GetTravelTime() > 0);
-				order->SetWaitTimetabled(order->GetWaitTime() > 0);
-			}
 		}
 	}
 }