Removing ALL Multiplayer Code

I was curious if anyone has removed all of the multiplayer code. The reason I am asking is because I am creating a single player game and I would like to optimize all of the code by removing anything that will be of no importance to me. I tried to figure out how to remove the Chat/Message Window but I was unsuccessful. I am very new to the v12 engine but I'm learning as I go. Any help would be greatly appreciated. Thanks.

-fuzz