How can i delete a previously made project from my profile ?

I have for a long time had a bad habit of making my backup projects as real projects only to bugfix etc.

now I am trying to manage networking and I saw my list of projects.
it is endless and half of the names are really not professional. I would like to remove them.

i think you have to delet it on your harddrive and then restart unity. (in the folder unity projects)

At the moment, I think that there is no way to permanently delete projects.