use composer autoloader

autoload.php

@@ -1,27 +0,0 @@
-<?php
-/**
- * Manages Composer autoload.
- *
- * @package WP_Ultimo
- * @since 2.3.0
- */
-
-// phpcs:disable
-
-if (isset($GLOBALS['__composer_autoload_files'])) {
-    $existingComposerAutoloadFiles = $GLOBALS['__composer_autoload_files'];
-}
-
-$loader = require_once __DIR__ . '/dependencies/autoload.php';
-// Ensure InstalledVersions is available
-$installedVersionsPath = __DIR__.'/composer/InstalledVersions.php';
-if (file_exists($installedVersionsPath)) require_once $installedVersionsPath;
-
-// Restore the backup
-if (isset($existingComposerAutoloadFiles)) {
-    $GLOBALS['__composer_autoload_files'] = $existingComposerAutoloadFiles;
-} else {
-    unset($GLOBALS['__composer_autoload_files']);
-}
-
-// phpcs:enable