I'm having a problem deleting my previous phone from my Android Market account. I use to have a Droid X, and now I have a Bionic. How do I delete my old phone? There is no 'remove' option. Wouldn't 'hiding' the phone prevent the person that I sell it to from using the market? Or would I have to figure out some way to delete the old phone? When the new person tied it to his/her Google account, would it disappear from mine?