Plane, AP_TECS: do not pass auto_land flag to TECS, it already knows it

ArduPlane/ArduPlane.cpp

@@ -952,7 +952,6 @@ void Plane::update_alt()
         SpdHgt_Controller->update_pitch_throttle(relative_target_altitude_cm(),
                                                  target_airspeed_cm,
                                                  flight_stage,
-                                                 landing.in_progress,
                                                  distance_beyond_land_wp,
                                                  get_takeoff_pitch_min_cd(),
                                                  throttle_nudge,

libraries/AP_SpdHgtControl/AP_SpdHgtControl.h

@@ -28,7 +28,6 @@ public:
 	virtual void update_pitch_throttle( int32_t hgt_dem_cm,
 										int32_t EAS_dem_cm,
 										enum AP_Vehicle::FixedWing::FlightStage flight_stage,
-                                        bool is_doing_auto_land,
                                         float distance_beyond_land_wp,
 										int32_t ptchMinCO_cd,
 										int16_t throttle_nudge,

libraries/AP_TECS/AP_TECS.cpp

@@ -925,7 +925,6 @@ void AP_TECS::_update_STE_rate_lim(void)
 void AP_TECS::update_pitch_throttle(int32_t hgt_dem_cm,
                                     int32_t EAS_dem_cm,
                                     enum AP_Vehicle::FixedWing::FlightStage flight_stage,
-                                    bool is_doing_auto_land,
                                     float distance_beyond_land_wp,
                                     int32_t ptchMinCO_cd,
                                     int16_t throttle_nudge,
@@ -937,7 +936,7 @@ void AP_TECS::update_pitch_throttle(int32_t hgt_dem_cm,
     _DT = (now - _update_pitch_throttle_last_usec) * 1.0e-6f;
     _update_pitch_throttle_last_usec = now;
 
-    _flags.is_doing_auto_land = is_doing_auto_land;
+    _flags.is_doing_auto_land = _landing.in_progress;
     _distance_beyond_land_wp = distance_beyond_land_wp;
     _flight_stage = flight_stage;
 

libraries/AP_TECS/AP_TECS.h

@@ -45,7 +45,6 @@ public:
     void update_pitch_throttle(int32_t hgt_dem_cm,
                                int32_t EAS_dem_cm,
                                enum AP_Vehicle::FixedWing::FlightStage flight_stage,
-                               bool is_doing_auto_land,
                                float distance_beyond_land_wp,
                                int32_t ptchMinCO_cd,
                                int16_t throttle_nudge,