bot.php

<?php
namespace Bitrix\Im\Update;
 
class Bot
{
    public static function removeDepartmentLinkAgent()
    {
        if (!\Bitrix\Main\ModuleManager::isModuleInstalled('intranet'))
        {
            return "";
        }
 
        $result = \Bitrix\Main\UserTable::getList([
            'select' => ['ID'],
            'filter' => [
                '=EXTERNAL_AUTH_ID' => \Bitrix\Im\Bot::EXTERNAL_AUTH_ID,
                '!UF_DEPARTMENT' => false
            ]
        ]);
 
        $user = new \CUser;
        while($row = $result->fetch())
        {
            $user->Update($row['ID'], ['UF_DEPARTMENT' => []]);
        }
 
        $departmentId = \Bitrix\Im\Bot\Department::getId(true);
        if ($departmentId && \CModule::IncludeModule('iblock'))
        {
            \CIBlockSection::Delete($departmentId);
        }
 
        return "";
    }
}