PageParamTable::deleteByPageId

static function deleteByPageId(int $pageId)
{
	$list = static::getList([
		'select' => [
			'ID',
		],
		'filter' => [
			'=PAGE_ID' => $pageId,
		],
	]);
	while($item = $list->fetch())
	{
		static::delete($item['ID']);
	}
}