1v1 how to play

Why did we keep 1v1 in the how to play section when its not in game? It has been the latest version it has said its no longer supported and you cant pick it. So do you forgot it or is it kind of a memorial to the dead game type? Anyway it starts with telling there are 3 game modes and starts with hardcore. So new player might wonder why its there. It could save up just a little space to remove it in the new version or replace itwith some otjher information