Remove unused factory.

module/VuFind/src/VuFind/View/Helper/Root/AuthorNotesFactory.php

-<?php
-/**
- * Auth helper factory.
- *
- * PHP version 7
- *
- * Copyright (C) Villanova University 2018.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category VuFind
- * @package  View_Helpers
- * @author   Demian Katz <demian.katz@villanova.edu>
- * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
- * @link     https://vufind.org/wiki/development Wiki
- */
-namespace VuFind\View\Helper\Root;
-
-use Interop\Container\ContainerInterface;
-use Interop\Container\Exception\ContainerException;
-use Laminas\ServiceManager\Exception\ServiceNotCreatedException;
-use Laminas\ServiceManager\Exception\ServiceNotFoundException;
-use Laminas\ServiceManager\Factory\FactoryInterface;
-
-/**
- * Auth helper factory.
- *
- * @category VuFind
- * @package  View_Helpers
- * @author   Demian Katz <demian.katz@villanova.edu>
- * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
- * @link     https://vufind.org/wiki/development Wiki
- */
-class AuthFactory implements FactoryInterface
-{
-    /**
-     * Create an object
-     *
-     * @param ContainerInterface $container     Service manager
-     * @param string             $requestedName Service being created
-     * @param null|array         $options       Extra options (optional)
-     *
-     * @return object
-     *
-     * @throws ServiceNotFoundException if unable to resolve the service.
-     * @throws ServiceNotCreatedException if an exception is raised when
-     * creating a service.
-     * @throws ContainerException if any other error occurs
-     */
-    public function __invoke(ContainerInterface $container, $requestedName,
-        array $options = null
-    ) {
-        if (!empty($options)) {
-            throw new \Exception('Unexpected options sent to factory.');
-        }
-        return new $requestedName(
-            $container->get(\VuFind\Auth\Manager::class),
-            $container->get(\VuFind\Auth\ILSAuthenticator::class)
-        );
-    }
-}