Emails we cannot delete without removing the user's ability to log in via Persona. In the [legal bug](https://bugzilla.mozilla.org/show_bug.cgi?id=831361#c24) we agreed to delete all personal information except the email because of this.

We don't use the name fields on the user account, so those are already blank, and the username is just a hash of their email, so all personal information is stored on the UserProfile object.