Just one.....
Because there's some fetishes I get but there's others that really freak me out, but if I had to just remove one it would be anything violent.
Scat is thankfully not that common. So I'd have to go with Futa and then NTR second. Bestiality is really gross too, but thankfully that's also not very common.
feet, because it does nothing for me and takes up space in games i otherwise like, so i just click through thinking "man, this could've been good if it was just about anything else...other than scat"