Unfortunately, at this time it's still not possible for Android users to delete game accounts. If you'd like to unlink them from the third-party accounts (Facebook, Google, or Apple), you can do so from your social account's Settings page. Doing this may not allow you to use that third-party account to bind with another account.
*Please note that once it is unlinked you will lose your account information, and we will be unable to restore the account for you.