Tracker: set_likely_flying in vehicle

AntennaTracker/Tracker.cpp

@@ -109,7 +109,7 @@ void Tracker::one_second_loop()
 
     // need to set "likely flying" when armed to allow for compass
     // learning to run
-    ahrs.set_likely_flying(hal.util->get_soft_armed());
+    set_likely_flying(hal.util->get_soft_armed());
 
     AP_Notify::flags.flying = hal.util->get_soft_armed();
 }