Plane: stop updating sensor status flags

These are updated as required in the gcs library itself.

ArduPlane/ArduPlane.cpp

@@ -291,12 +291,6 @@ void Plane::one_second_loop()
             // reset the landing altitude correction
             landing.alt_offset = 0;
     }
-    
-    // update error mask of sensors and subsystems. The mask uses the
-    // MAV_SYS_STATUS_* values from mavlink. If a bit is set then it
-    // indicates that the sensor or subsystem is present but not
-    // functioning correctly
-    gcs().update_sensor_status_flags();
 }
 
 void Plane::compass_save()