src/Web/User.php
protected function removeIdentityCookie()
    {
        $cookie = Reaction::create(array_merge($this->identityCookie, [
            'class' => 'Reaction\Web\Cookie',
        ]));
        $this->app->response->getCookies()->remove($cookie);
    }
protected function removeIdentityCookie()
    {
        $cookie = Reaction::create(array_merge($this->identityCookie, [
            'class' => 'Reaction\Web\Cookie',
        ]));
        $this->app->response->getCookies()->remove($cookie);
    }
Removes the identity cookie.
This method is used when [[enableAutoLogin]] is true.