edit ShinNakamura; There was a reason our neandrathal ancestors had a gall bladder, an appendix, and sharp eye teeth. It was to aid the process of eatong meat, no doubt. But we've evolved boyond that, and we no longer require meat in our diet.
Wrong. Your appendix is, thought to be, the organ that would have produced cellulase to digest plants better. It is inherited from our herbivore ancestors and is now pretty much useless as the appendix seems to do nothing but get infected now-a-days. Thus it would be conclusive to say that we have evolved into omnivores rather than evolved away from eating meat.