Contact Google Play about Android Apps – Google Play Help
There are apps, that I purchased resp. downloaded once, and that I removed meanwhile from my Android devices, but I still get updates offered again and again, and that way I am not able, to select “update all”. So I thought, it’s more adequate to get them removed from “My Android Apps” entirely, but:
At this time, there is no way to permanently delete or remove apps from either My Apps or My Orders.
We’re always working to improve functionality of My Apps and My Orders, so stay tuned!