Как удалить/спрятать конкретную версию скрипта?

You cannot delete script version by yourself as an author. Only thing you can do is ask moderator to do that for you. Which version do you want to delete?

Все версии, кроме v0.6.6
https://greasyfork.org:4002/ru/scripts/440559-cg-xaos/versions

Done

Done

Хотел совсем наоборот. Спасибо :D

Well then no, we don't do that, unless there's a very good reason like you accidentally left your password in there.