File image: RTHK HONG KONG (AFP) – Hong Kong’s official radio station said it will replace its 24-hour BBC broadcast with Chinese state-run programming in a move critics on Saturday said was a step towards “mainlandisation”. The city’s Radio Television Hong Kong has been broadcasting the BBC World Service live since 1978 but will replace it starting September 4 with the China National Radio Hong Kong Edition (CNR). Some see the move as signs…