By Andrew Chung (Reuters) – The U.S. Supreme Court on Wednesday turned away a challenge by a group of firearms dealers in New York to numerous Democratic-backed measures adopted by the state last year regulating gun purchases that the businesses said hurt their businesses. The justices, with no public dissents, denied a request by the dealers to block the laws, some of which imposed gun safety requirements on retailers, while their appeal of a lower court’s decision in favor of New York proceeds. The state’s Democratic-led legislature passed some of the laws last June. Others were adopted in J…