Hey there, Lydia!
There are currently no “menhir free” gameworlds. All gameworlds since Changelog 0.91 have included the menhir feature.
It would be really nice to have a server without menhirs, not all players like it. It takes away from having to really be good at strategy to deal with the luck you have been handed. Menhirs are fine, and it allows for this group of players that group together server after server and do the same thing over and over. Nothing wrong with letting that happen. But it would be nice to have an option to play with no menhirs, where you can't just group as you like, where you have to strategize around the map turf you land on.