Possible to delete uploaded file inside a post from the server?

When writing a post, I can Ctrl+V to paste the bitmap from the clipboard or upload files. Then the file gets a unique URL like “https://blenderartists.org/uploads/short-url/somesortofhashstring” or “https://media.blenderartists.org/uploads/default/original/somelonghash”. But is it possible the image or file from the server? I mean, I could upload a wrong image (that may contain sensitive information) by mistake or I may want to retract an image.

I tried editing the post to remove the image tag. While the image was removed from the post, I could still access the image with the direct URL to the image.

Removed images should be removed from the server within 24 hours, if I’m not mistaken.