Remove part of the document which seems to cause the build to be failed.

src/main/java/org/leolo/nrdatad/model/TrainScheduleSector.java

@@ -53,14 +53,10 @@ public class TrainScheduleSector {
     private String timingLoad;
     /**
      *  Signalling ID, also referred to as headcode, not to be confused with below. For passenger services, this is the headcode of the service. For anonymous freight services this will be blank.
-     *
-     * @see TrainScheduleSector.headcode
      */
     private String signalId;
     /**
      * National Reservation System headcode, designated by train operator, not to be confused with signal ID.
-     *
-     * @see TrainScheduleSector.signalId
      */
     private String headcode;
     /**