Cookies "CONCRETE5", can be removed?

Hello, I would like to ask how to remove the cookie named “CONCRETE5”. These cookies are written even when I am not logged in. Basically to every user, but I don’t want that. Is it possible to remove it so that it is only when logged in? Excuse my bad English.

Do you want the CONCRETE5 cookie to be deleted when you log out? The cookie won’t be created unless you log in or you’ve configured the site to do something that requires the website to remember who you are.