How to remove my submissions from my Unity Learn account?

I'd like to remove all submissions from my Unity Learn account. I was able to partially "remove" some of them, but they're still "there", empty, and there is one I wasn't able to remove at all.

 

But why you want to remove your submissions?

 

I am not sure you can delete submissions from Unity Learn account. Look for the archive option: Go to the Develop tab ->Settings.

do my essay​