I have uploaded an extension to my dashboard but I don't want to publish it any more. The extension remained "draft" status, and I want to get it removed from the dashboard. However, I cannot find any way to do so so far. Can anyone help please?
You can't delete an extension from the Chrome developer dashboard.
In the past, there was a delete button at the dashboard, but it has been removed because developers accidentally removed apps/extensions (and then tried to re-upload the app/extension with the same ID, which failed).
Unpublished extensions/apps do not count toward the extension limit, so there are no consequences for having a lot of unpublished apps/extensions besides the clutter at the dashboard.
If you're really bothered by the entry at your dashboard, create a user style, user script or extension to hide it.