Cannot delete an user that only shows in ADSIEdit

Hello people,

I'm struggling with this issue from about an year.

A long time ago we had an improper decommissioned DC from a sub zone of our domain. In this case: lig.contoso.com

After the unclean removal some traces of that domain still persists in my AD and I can't remove it.

Theres an user named: CN=$LIG owned by the SAM Account, that does no show up in ADUC but show in ADSI.

When I try to remove it using ADSIEdit, I always got:

Thanks in advance,