core/Form.php
public function removeError($name)
    {
        if (isset($this->fields[$name])) {
            $this->fields[$name]->error = null;
        }
    }
public function removeError($name)
    {
        if (isset($this->fields[$name])) {
            $this->fields[$name]->error = null;
        }
    }
删除错误
@param $name