public function remove($passhash, $timestamp)
	{
		if ($this->user_id <= 0)
		{
			return false;
		}

		$db = \App::get('db');

		if (empty($db))
		{
			return false;
		}

		$db->setQuery(
			"DELETE FROM `#__users_password_history` WHERE user_id= " .
			$db->quote($this->user_id) . " AND passhash = " .
			$db->quote($passhash) . " AND invalidated = " .
			$db->quote($timestamp) . ";"
		);

		if (!$db->query())
		{
			return false;
		}

		return true;
	}