Routes come and go. Maybe this one will come back. No one here can tell you whether or not it will since this is a customer to customer forum.
I'd suggest that you e-mail the airline to let it know you want to see the flight re-instated. I'd suggest an e-mail. To send one click on contact us at the bottom of this page. Then pic e-mail from the contact options listed on the top left of the ensuing page.