Remove mod_muc_occupantid in example config: feature is now in mod_muc

Author: badlop

ecs/conf/ejabberd.yml

@@ -292,7 +292,6 @@ modules:
     default_room_options:
       mam: true
   mod_muc_admin: {}
-  mod_muc_occupantid: {}
   mod_offline:
     access_max_user_messages: max_user_offline_messages
   mod_ping: {}