override payment notification email so it only goes out to primary attendee

gistfile1.txt

function event_espresso_send_payment_notification($atts) {

	do_action('action_hook_espresso_log', __FILE__, __FUNCTION__, '');

	global $org_options;
	extract($atts);
	
	if ($org_options['default_mail'] == 'Y') { 
		event_espresso_email_confirmations(array('attendee_id' => $attendee_id, 'send_admin_email' => 'false', 'send_attendee_email' => 'true', 'custom_data' => array('email_type' => 'payment', 'payment_subject' => $org_options['payment_subject'], 'payment_message' => $org_options['payment_message'])));
	}
	
	return;
}