This plugin helps you to delete an menu item and its sub items very easily.

You don't need to click on an item, then click "Remove" link. Just click "x" button (to delete an item) or click "xx" (to delete an item and all its sub items)

0.1

• Initial release

1. Upload remove-menu folder to the /wp-content/plugins/ directory, or upload the .zip package through Plugins -> Add New -> Upload.
2. Activate the plugin through the 'Plugins' menu in WordPress You will see quick delete buttons in /wp-admin/nav-menus.php

Quick delete menu item buttons in /wp-admin/nav-menus.php