I would be happy to help you here. Please follow the below instructions to remove the Joomla plugin from the intranet site.
For uninstalling the Joomla plugin
1) In the Joomla Admin console, Goto Extensions –> Manage –> Manage.
2) Search for miniorange or ldap in the search box
3) Select all the extensions listed and click on uninstall.
Please let me know if you’re still facing any issues.