Remove accessors which shouldn't be set

Author: Douglasdc3

mode-s/src/main/java/aero/t2s/modes/Track.java

@@ -248,18 +248,10 @@ public Acas getAcas() {
         return acas;
     }
 
-    public void setAcas(Acas acas) {
-        this.acas = acas;
-    }
-
     public FlightStatus getFlightStatus() {
         return flightStatus;
     }
 
-    public void setFlightStatus(FlightStatus flightStatus) {
-        this.flightStatus = flightStatus;
-    }
-
     public void setAltitude(Altitude altitude) {
         this.altitude = altitude;
     }