Click “Spaces” in the menu on the left side. Go the space which you want to delete. In the upper right corner of the space you will find a button (…).
After clicking the button, select “Delete”.
Are you sure? Please make sure that you want to delete the Space. If you are, click Yes.
Once a space is deleted, the Space is gone and can’t be restored! All the used files are still in de the file manager.