I tried that and failed.Hated the thing from day one. It was supposed to have been taken off at my first service and was told that it had but there it still is. You should get a kit to remove it with through pipes but I can't really be bothered with it now and can't think why it should cause any problems so just look at the nice bits of the bike instead (of which there are many).
I can't see any reason to remove it so it will stay for the moment and I can enjoy the warm fuzzy glow from doing something for the environment...