Hi
As a referee for said country, on the main page of the item, you should see a button beside each yearline (as long as no one owns them), with an X in.
Press this and you get asked if you really want to delete the yearline.
I have a soft spot for origami paper cranes.
Read or watch about "Sadako Sasaki and the Thousand Paper Cranes".
Spread a little peace and happiness wherever you go :)