Do you ever plan to come to Arizona again in your life?
Perhaps you can get away without paying the ticket if you'll never ever return to our state. But if by some chance you do, and you do something wrong...it can cause a major inconvenience.
You admit you drove over the speed limit. They start ticketing 11 mph over. There are signs on roads that indicate when photo radar is used. You evidently ignored them, and now you're trying to ignore the ticket.
I'd recommend you either pay up or follow the process to contest the ticket.