remove incorrect tutorial

Author: jneczypor

_topic_maps/_topic_map_rosa.yml

@@ -116,8 +116,6 @@ Topics:
   File: cloud-experts-external-dns
 - Name: Dynamically issuing certificates using the cert-manager Operator on ROSA
   File: cloud-experts-dynamic-certificate-custom-domain
-- Name: Changing the Console, OAuth, and Downloads domains and TLS certificate
-  File: cloud-experts-rosa-osd-change-default-domain
 - Name: Assigning consistent egress IP for external traffic
   File: cloud-experts-consistent-egress-ip
 - Name: Getting started with ROSA