Budget airline HK Express removed two passengers before take-off from a Hong Kong-bound flight from Da Nang in Vietnam, after their fight over accusations of seeing prostitutes and physical abuse turned chaotic. The low-cost unit of Cathay Pacific Airways confirmed that the pair were engaged in disruptive behaviour on Sunday while boarding the flight from Da Nang to Hong Kong, which caused a delay of nearly 90 minutes. A video circulating online shows a Hong Kong couple arguing before boarding…