Once I needed to delete the repository with github. I mean the service site github.com. Surprisingly, to do this, I had to ask for help from a colleague. I myself have not found where to do it.
So, go to the repository. And click on the Settings link.
We are dragging to the very bottom, in search of a button [Delete this repository].
Click on the buttonhole and in the pop-up window in the field Please type in the name of the repository to confirm. We name the repository.
We confirm the request. Everything, the repository is deleted.