CEventCalendar::DeleteCalendarEvent

static function DeleteCalendarEvent($calendarId, $eventId, $userId)
{
	[$iblockId, $sectionId, $subSectionId, $ownerType, $ownerId] = $calendarId;

	return CECEvent::Delete(array(
		'id' => $eventId,
		'iblockId' => $iblockId,
		'ownerType' => mb_strtoupper($ownerType),
		'ownerId' => $ownerId,
		'userId' => $userId,
		'bCheckPermissions' => false,
		'bSyncDAV' => false
	));
}