I have noticed that both the original civ2, civ2mge and even SMAC had unused junk like that scattered throughout the game's installed files. Not multiplayer related stuff in particular but unused text files, un-updated game notes, and obsolete files in general.
Did anyone else wonder what drugs Firaxis was on when reading the readme for Civ3 and saw the notes saying that OpenGL is required to run the game? Uh... the game is 100% DirectX, no OpenGL required whatsoever. The CD even includes a very old MS OpenGL install file.
Also if you look at the Civ3 install guide document, the title of it is "Master Of Orion II".
I just find it funny how the later microprose and all firaxis games have trash leftover from development.