Designer::unregisterRepoElement

static function unregisterRepoElement(string $code): void
{
	$res = DesignerRepo::getList([
		'select' => [
			'ID'
		],
		'filter' => [
			'=XML_ID' => $code
		]
	]);
	if ($row = $res->fetch())
	{
		DesignerRepo::delete($row['ID']);
	}
}