By Karolos Grohmann and Steve Keating BEIJING (Reuters) -Nine American figure skaters lost their appeal on Saturday for a ceremony at the Beijing Olympics to receive their silver medals in the team event after Russian teen Kamila Valieva’s doping case forced a postponement. Evan Bates, Karen Chen, Nathan Chen, Madison Chock, Zachary Donohue, Brandon Frazier, Madison Hubbell, Alexa Knierim and Vincent Zhou finished second behind the Russian Olympic Committee team in the competition on Feb. 7.. The International Olympic Committee (IOC) had decided no medals for the competition would be presented…