EUGENE, Ore. (Reuters) – American sprint coach Rana Reider, who is being investigated for sexual misconduct, was warned and removed from the World Athletics Championships at Hayward Field by police after he gained unauthorised access, British media reported on Sunday. Reider, who is being investigated by the US Centre for SafeSport following multiple complaints, is not accredited for the worlds due to the allegations but attempted to gain access to the athletes’ warm-up area before the men’s 100m. He coaches Marvin Bracy and Trayvon Bromell — who won silver and bronze in the 100m final — whi…