Plane: use DataFlash should_log to determine raw IMU logging

ArduPlane/ArduPlane.cpp

@@ -356,8 +356,6 @@ void Plane::one_second_loop()
     }
 #endif
 
-    ins.set_raw_logging(should_log(MASK_LOG_IMU_RAW));
-
     // update home position if soft armed and gps position has
     // changed. Update every 5s at most
     if (!hal.util->get_soft_armed() &&

ArduPlane/system.cpp

@@ -100,6 +100,8 @@ void Plane::init_ardupilot()
     }
 #endif
 
+    ins.set_log_raw_bit(MASK_LOG_IMU_RAW);
+
     set_control_channels();
     
 #if HAVE_PX4_MIXER
@@ -312,9 +314,6 @@ void Plane::startup_ground(void)
     // ready to fly
     serial_manager.set_blocking_writes_all(false);
 
-    ins.set_raw_logging(should_log(MASK_LOG_IMU_RAW));
-    ins.set_dataflash(&DataFlash);
-
     gcs_send_text(MAV_SEVERITY_INFO,"Ground start complete");
 }