The only counterable ones are just for nausea and blindness, which are the only ones I could possibly see removed. There are also still many ways to escape pvp, you can epearl up high and then shoot someone off when they chase, you can use your own sword to freeze the person chasing you and then leave them in the dust, if you're much better at bowboosting and can double boost consistently you'll practically never get caught. Obviously the players who don't have a punch II bow or a freeze sword will be at a disadvantage, they haven't grinded as much so they won't be rewarded as much.
Stop suggesting to remove CE's just because you can't adapt or bother to grind. It's a prison server, if you just want vanilla pvp, go to a practice server.