disable header - Footer - column left and column right prestashop

 protected function disableColumns()
    {
        $this->display_column_left = false;
        $this->display_column_right = false;
        $this->display_footer = false;
        $this->display_header = false;
    }

 public function initContent()
    {

        parent::initContent();
        $this->disableColumns();
}