Luis Peel

This plugin provides a simple and powerful interface for managing custom post type slugs. With it, you can:
<ul>
<li>View: See a complete list of all custom post types registered on your site.</li>
<li>Edit: Quickly and safely change the slug of any custom post type. For example, you can transform “vehicle” into “car” for shorter and more descriptive URLs.</li>
<li>Delete: Completely remove the slug of a custom post type, simplifying your URL structure.</li>
</ul>
Example:
If you have a custom post type called “vehicle” with a URL like <a href="https://www.yoursite.com/vehicle/mycar" rel="nofollow ugc">https://www.yoursite.com/vehicle/mycar</a>, this plugin will allow you to change the slug to “car” to get the URL <a href="https://www.yoursite.com/car/mycar" rel="nofollow ugc">https://www.yoursite.com/car/mycar</a> or even remove it completely to have <a href="https://www.yoursite.com/mycar" rel="nofollow ugc">https://www.yoursite.com/mycar</a>.
Benefits:
<ul>
<li>Greater control over your URLs.</li>
<li>Flexibility to adapt URLs to your specific needs.</li>
<li>Ease of use thanks to its intuitive interface.</li>
</ul>

Custom Post Type Slug Manager

Easily edit or remove slugs for any custom post type. Customize your content URLs without coding.

jocke_gbg

In WordPress 2.9 custom post type was introduced, that opened a new world for many WordPress developers. 
When it comes to removing the slug and not destroying the rewrite rules for other post types this plugin works great. 
This only concerns those who are using %postname% as permalink structure and want to add a custom post type so that 
the urls for them are in the same way as normal posts and pages: http://siteurl/%custom_post_type_title%/.
Find more useful tips and plugins: <a href="http://www.ultimatewebtips.com/" title="More WordPress plugins" rel="nofollow ugc">Ultimate web tips</a>

Remove slug from custom post type

it is not work when i add title post type same title post

Not work if like title

In WordPress 2.9 custom post type was introduced, that opened a new world for many WordPress developers.

Custom Post Type Slug Manager vs Remove slug from custom post type