Yahoo mail advertisement-pane (pain) remover (greasemonkey)

This greasemonkey script removes the advert pane on the right hand side in Yahoo mail. You can now reclaim the lost email real estate as well as reducing the ads shown.
Which happens to be a premium feature - thanks greasemonkey.

https://openuserjs.org/scripts/venkman69/Yahoo_Mail_New_Ad_Remover