Comment cleanup

core/src/mindustry/entities/bullet/RailBulletType.java

@@ -6,12 +6,6 @@ import mindustry.content.*;
 import mindustry.entities.*;
 import mindustry.gen.*;
 
-//TODO this class is bad for multiple reasons, remove/replace it.
-//- effects unreliable
-//- not really hitscan but works like it
-//- buggy trails
-//- looks bad
-//- generally unreliable
 public class RailBulletType extends BulletType{
     public Effect pierceEffect = Fx.hitBulletSmall, updateEffect = Fx.none;
     /** Multiplier of damage decreased per health pierced. */