Not really? Cookie names/values are usually inscrutable to anyone who hasn't worked on the site in question, and the idea that a non-developer would need to selectively delete individual cookies to work around a bug in a site is just silly (those users are much better served by simply clearing all of that site's cookies and logging in again).

(And when the need truly does arise, there's a perfectly-good tool for that which is no harder to find than the sub-menu being deprecated.)