[development] A bug in 4.7b2 which won't be fixed

Hi! I have already submitted a patch which stops $user->data going oversize, basically it will add an unset($form_values['_account']) to user_edit_submit, so that the huge _account key won't be saved. But for 4.7b2 and HEAD users, who already have $user->data blown up, they need a different thing: $form_values['_account'] = NULL and this will never get into the core because there is no reason to. So add this statement, and when the patch lands, remove it. Regards NK