I can't seem to delete a site that I added on my Google account. When I login at here it displays that I am the owner/editor of the site but wherever I look, I can't seem to find a delete site function.
See screenshot (click image to view larger):
I have been to this issue once! Yes, indeed it's really hard to find a way to get rid of this site reference under Google Translation. But, man made everything can be controlled ;-)
Simply Click on here, go to "Tools" > "Translation Memories" >> Remove your site reference...
On the Google Webmaster screen that first pops up when you log-in to Google Webmaster Tools which asks you to select a site. On the same line with the website name, all the way to the right there is a button that says 'Manage Site' click this button and you will be prompted with a drop-down menu which has the option to 'Delete Site'.