CURTIS C. WYNNE/NEWS-SUN EUNICE — Eunice Police Chief Casey Arcidez resigned his position last week, but that doesn’t mean Eunice is without a chief. A law enforcement officer for almost two decades, Arcidez sent a one-line text message to the News-Sun for explanation. “I plan on starting a new career in the oilfield,” Arcidez said. City Manager Shannon Cummins, declining …