Neptune and Pluto are pretty much never any where near each other so Neptune can’t clear Pluto. Plus Pluto is on a different plane than the rest of the solar system. Neptune is like 8000 time more massive than Pluto so it would most definitely clear it if they ever ran into each other, it’s just that they never have and likely never will.

That's a good question and I actually don't know the answer, I hope someone who knows more can answer.