NASHVILLE SCENE By CORY WOODROOF  It’s the laughs that get you. Of all the decisions Andy Muschietti made in his 2017 adaptation of It, Stephen King’s beloved kids-fight-interdimensional-murder-clown tale of overcoming fear and utilizing turtle power, what stands out is his insistence on making the worst thing you hear shrill, unforgiving laughter. You know what you’re getting …