Every week, Artnet News brings you Wet Paint, a gossip column of original scoops. If you have a tip, email Annie Armstrong at [email protected].   DAVID ZWIRNER AND HAROLD ANCART PART WAYS It’s pretty rare to see an artist leave behemoth David Zwirner gallery, so you can imagine my surprise when Wet Paint learned that Belgian-born, New York-based painter Harold Ancart is officially no longer represented by the gallery. Ancart, who made his debut with Zwirner in 2018, is known for his large-scale abstract paintings that are often comic-like depictions of horizons and the natural world. He was introduced to Zwirner by Harry Scrymgeour, a former partner at Clearing gallery who told Artnet News in 2018…