Tracker: let AHRS update orientation in its own time

AntennaTracker/Tracker.cpp

@@ -81,9 +81,6 @@ void Tracker::get_scheduler_tasks(const AP_Scheduler::Task *&tasks,
 
 void Tracker::one_second_loop()
 {
-    // make it possible to change orientation at runtime
-    ahrs.update_orientation();
-
     // sync MAVLink system ID
     mavlink_system.sysid = g.sysid_this_mav;