PSR4 loading for Controller 2.0.0

app/controllers/app.php

@@ -1,33 +0,0 @@
-<?php
-
-namespace App\Controllers;
-
-use Sober\Controller\Controller;
-
-class App extends Controller
-{
-    public function siteName()
-    {
-        return get_bloginfo('name');
-    }
-
-    public static function title()
-    {
-        if (is_home()) {
-            if ($home = get_option('page_for_posts', true)) {
-                return get_the_title($home);
-            }
-            return __('Latest Posts', 'sage');
-        }
-        if (is_archive()) {
-            return get_the_archive_title();
-        }
-        if (is_search()) {
-            return sprintf(__('Search Results for %s', 'sage'), get_search_query());
-        }
-        if (is_404()) {
-            return __('Not Found', 'sage');
-        }
-        return get_the_title();
-    }
-}