private void forgetIdentity(HttpServletRequest request, HttpServletResponse response) {
        getCookie().removeFrom(request, response);
    }
Removes the rememberMe cookie from the given request/response pair.

@param request  the incoming HTTP servlet request
@param response the outgoing HTTP servlet response
web/src/main/java/org/apache/shiro/web/mgt/CookieRememberMeManager.java