public function removeRules($keys, $ruleset = null)
    {
        $keys = is_array($keys) ? $keys : func_get_args();
        $rules = $ruleset ? $this->getRuleset($ruleset) : $this->getRules();
        array_forget($rules, $keys);
        if ($ruleset) {
            $this->setRuleset($rules, $ruleset);
        } else {
            $this->setRules($rules);
        }
    }