going dodo 

becoming extinct or irrelevant. no longer necessary

With the advent of finger touch interfaces, the mouse is going dodo.

going dodo by KLRQ May 9, 2010

Going the way of the dodo bird 

A phrase used by doofus’s to attempt to sound intelligent when in all reality it only makes the speaker sound like a dodo bird.

Hey Wally, don’t look into anything that might make us money, that shit’s going the way of the dodo bird around here.

Going the way of the dodo bird by Gov’t Cheese January 13, 2023