Remove orphaned TestObjectRouteLoader fixture.

src/Symfony/Component/Routing/Tests/Fixtures/TestObjectRouteLoader.php

@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Routing\Tests\Fixtures;
-
-use Symfony\Component\Routing\Loader\ObjectRouteLoader;
-
-class TestObjectRouteLoader extends ObjectRouteLoader
-{
-    public $loaderMap = [];
-
-    protected function getServiceObject($id)
-    {
-        return $this->loaderMap[$id] ?? null;
-    }
-}