McDonald’s McNuggets are going fowl-free. McPlant Nuggets __ made from peas, corn and wheat with a tempura batter __ are the second product McDonald’s has co-developed with Beyond Meat, an El Segundo, California-based maker of plant-based meats. McDonald’s will also start selling the McPlant burger in Germany next week. Availability of the McPlant nuggets and burger in future markets will …