This IS needed. It is a form of user protection. There's no other option to clear cookies other than this.
Not true. You can still navigate to the cookie store on disk and delete the cookies there. So by your logic, having it in a menu is just a convenience feature, something WANTED but "NOT NEEDED". Even browsing the Internet in a graphical browser can be extrapolated to a mere convenience. If I'm not mistaken, convenience is part of the whole reason we use computers.