The United States Olympic Committee has claimed figure skater Kamila Valieva’s reprieve to compete at the Winter Games in Beijing “appears to be another chapter in the systemic and pervasive disregard for clean sport by Russia.” Valieva, 15, had the lifting of a provisional suspension over a positive doping test upheld by the Court of Arbitration for Sport (CAS) on Monday. The teenage prodigy can now compete in the women’s individual event which starts Tuesday after she led the Russian Olympic Committee (ROC) to victory in the team event. “It is the collective responsibility of the entire Olym…