(Reuters) - British travel-food company SSP Group Plc reported higher quarterly revenue on Friday but said some of its airports in North America were hit by the grounding of Boeing 737 MAX aircraft and the transfer of passengers away from its terminals.The company also said its like-for-like sales growth in the rest of the world was mixed with good performances in Egypt and the Middle East slightly offset by the shutdown of operations at Jet Airways in India and slower growth in China.Total..