How to remove your Battle.net account
Battle.net is the account management site of Blizzard Entertainment (including World of Warcraft, Starcraft, Diablo, Hearthstone, etc..). Sadly an automated account removal is not possible.
Blizzard and Battle.net say on their privacy page:
In some cases, we may not be able to delete your personal information and will retain and use our information as long as necessary to comply with our legal obligations, resolve disputes, and/or enforce our agreements.
Please note that the deletion of your data will lead to the termination of your account and all applicable services.”
Helpful Trick: Removing online data
Helpful Trick: Remove third-party logins
If you signed up for Battle.net using a third-party login such as Facebook or Twitter, you probably want to revoke all access from Battle.net. Click here to find out how.