diff --git a/upgrade/upgrade-2.3.1.php b/upgrade/upgrade-2.3.1.php
deleted file mode 100644
index fecbd60..0000000
--- a/upgrade/upgrade-2.3.1.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-/**
- * Copyright since 2007 PrestaShop SA and Contributors
- * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
- * that is bundled with this package in the file LICENSE.md.
- * It is also available through the world-wide-web at this URL:
- * https://opensource.org/licenses/AFL-3.0
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@prestashop.com so we can send you a copy immediately.
- *
- * @author    PrestaShop SA <contact@prestashop.com>
- * @copyright Since 2007 PrestaShop SA and Contributors
- * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
- */
-if (!defined('_PS_VERSION_')) {
-    exit;
-}
-
-function upgrade_module_2_3_1($module)
-{
-    $module->unregisterHook('categoryUpdate');
-    $module->registerHook('actionCategoryUpdate');
-
-    return true;
-}
diff --git a/upgrade/upgrade-2.3.2.php b/upgrade/upgrade-2.3.2.php
deleted file mode 100644
index 6a1bcdc..0000000
--- a/upgrade/upgrade-2.3.2.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-/**
- * Copyright since 2007 PrestaShop SA and Contributors
- * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
- * that is bundled with this package in the file LICENSE.md.
- * It is also available through the world-wide-web at this URL:
- * https://opensource.org/licenses/AFL-3.0
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@prestashop.com so we can send you a copy immediately.
- *
- * @author    PrestaShop SA <contact@prestashop.com>
- * @copyright Since 2007 PrestaShop SA and Contributors
- * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
- */
-if (!defined('_PS_VERSION_')) {
-    exit;
-}
-
-function upgrade_module_2_3_2($module)
-{
-    return Db::getInstance()->execute('ALTER TABLE `' . _DB_PREFIX_ . 'linksmenutop` CHARACTER SET = utf8mb4 COLLATE utf8mb4_general_ci;')
-      && Db::getInstance()->execute('ALTER TABLE `' . _DB_PREFIX_ . 'linksmenutop_lang` CHARACTER SET = utf8mb4 COLLATE utf8mb4_general_ci;');
-}
diff --git a/upgrade/upgrade-2.3.5.php b/upgrade/upgrade-2.3.5.php
deleted file mode 100644
index 005c06e..0000000
--- a/upgrade/upgrade-2.3.5.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-/**
- * Copyright since 2007 PrestaShop SA and Contributors
- * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
- * that is bundled with this package in the file LICENSE.md.
- * It is also available through the world-wide-web at this URL:
- * https://opensource.org/licenses/AFL-3.0
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@prestashop.com so we can send you a copy immediately.
- *
- * @author    PrestaShop SA <contact@prestashop.com>
- * @copyright Since 2007 PrestaShop SA and Contributors
- * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
- */
-if (!defined('_PS_VERSION_')) {
-    exit;
-}
-
-function upgrade_module_2_3_5($module)
-{
-    return Db::getInstance()->execute('INSERT IGNORE INTO `' . _DB_PREFIX_ . "hook` (`name`, `title`, `description`) VALUES
-        ('actionMainMenuModifier', 'Modify main menu view data', 'This hook allows to alter main menu data')")
-        && $module->registerHook('actionMetaPageSave');
-}