diff --git a/src/Plugin.php b/src/Plugin.php
deleted file mode 100644
index 6c4d5ea3..00000000
--- a/src/Plugin.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-declare(strict_types=1);
-
-/**
- * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
- * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
- *
- * Licensed under The MIT License
- * Redistributions of files must retain the above copyright notice.
- *
- * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
- * @link          https://cakephp.org CakePHP(tm) Project
- * @since         1.0.2
- * @license       https://www.opensource.org/licenses/mit-license.php MIT License
- */
-namespace Authentication;
-
-/**
- * Backwards-compatible alias for AuthenticationPlugin.
- *
- * @deprecated 4.0.0 Use AuthenticationPlugin instead.
- */
-class Plugin extends AuthenticationPlugin
-{
-}