Wiktionary
vb. (context video games English) To remove (a feature, subplot, item, or character) from a video game in the process of localization that game from a foreign culture.
Usage examples of "dummy out".
Kris said, holding the dummy out at arm's length to get a good view.
The night being still hot and the room unbearable, they carried the suit on its dummy out and down the hall.
At the next signal, the handlers, one on each side, heaved the dummy out.
Beside the Soyuz was the flatbed truck which had carried the capsule dummy out there.
The microsheet got all his fingers from several angles, and so Walker was able to dummy out a finger mask for our inside man within a single night.
He brought the barges engines up to full power all at once, and simply hoped they wouldnt blow or dummy out on liftoff.