They are actually quite desirable and beneficial. It is rare to have a bristleworm that is a problem. I would NOT remove bristleworms personally. If you have to many, you want to address overfeeding. Population explosions are signs of too much nutrient load in the tank.
They are highly desirable clean up critters. They are a natural, normal and beneficial creature in a tank. RARELY are their problematic one's....fight your battles but this is one I would not worry about. You won't win, IMO, and you don't need to.