You should not remove it
I'll tell you why. When you like it, if you're logged into Facebook, when you go on your news feed or if your friends go on the news feed, it shoiws it, making them go on it sometimes, increasing traffic on Newgrounds and also, if you go on your profile, at a certain bit of your profile, you will see the likes section so even other people can see your likes. To be honest, removing it will decrease the traffic so its best to keep it on. Nice music and fight though. P.S. I don't think its really ugly to be honest