获取航班计划后，只更新不删除。

src/main/java/com/gzzn/omms/msgexchangeapi/service/flightInfo/FlightInfoServiceImpl.java

@@ -34,8 +34,6 @@ public class FlightInfoServiceImpl implements IFlightInfoService {
 		String   clobMsg = cminmsg.getCminmsgsClobMsg();
 		MSG  dnldMsg = exchangeService.xmlstrToObject(clobMsg, MSG.class);
                 		
-		this.removeAll();
-		
 		//
 		List<SCHD.FLTR> lsFltr = dnldMsg
                 .getSCHD()