Hi! I have a couple of pictures I'd like to delete from my account. They're just not necessary and I also have better quality versions uploaded now. I've managed to delete them from my albums, but when I click to upload pictures, they still show up "in the archive" (i.e. I can choose to put them in other albums still) so I assume they're still uploaded. I'd like to delete them permanently to free up space. Is this possible?