The icon wasn't supposed to be available, actually. The checkbox to turn it on and off was created and removed during beta. I'm not quite sure why you're seeing it, since the default setting was set to Disabled.
Regardless, it will be disabled (the minimap icon) for the next release.
user_1866 Regular ShmoeThis would be nice as my mini-map is quite cluttered already and for me, Tidy Plates is one of those "set it & forget it" mods that I don't need to tinker around with the settings hardly ever.