FlightTaskManualAltitudeSmooth: remove unused member methods/variables

src/lib/FlightTasks/tasks/FlightTaskManualAltitudeSmooth.cpp

@@ -44,20 +44,13 @@ FlightTaskManualAltitudeSmooth::FlightTaskManualAltitudeSmooth(control::SuperBlo
 	_smoothing(_velocity(2), _sticks(2))
 {}
 
-
-bool FlightTaskManualAltitudeSmooth::activate()
-{
-	_vel_sp_prev_z = _velocity(2);
-	return FlightTaskManualAltitude::activate();
-}
-
 void FlightTaskManualAltitudeSmooth::_updateSetpoints()
 {
 	/* Get yaw, thrust */
 	FlightTaskManualAltitude::_updateSetpoints();
 
 	/* Smooth velocity in z*/
-	_smoothing.smoothVelFromSticks(_vel_sp_z, _deltatime);
+	_smoothing.smoothVelFromSticks(_vel_sp(2), _deltatime);
 
 	/* Check for altitude lock*/
 	_updateAltitudeLock();

src/lib/FlightTasks/tasks/FlightTaskManualAltitudeSmooth.hpp

@@ -45,19 +45,11 @@ class FlightTaskManualAltitudeSmooth : public FlightTaskManualAltitude
 {
 public:
 	FlightTaskManualAltitudeSmooth(control::SuperBlock *parent, const char *name);
-
 	virtual ~FlightTaskManualAltitudeSmooth() = default;
 
-	bool activate() override;
-
-
 protected:
-
 	virtual void _updateSetpoints() override;
 
 private:
-
-	ManualSmoothingZ _smoothing; // Smoothing for velocity setpoints.
-	float _vel_sp_prev_z{}; // Velocity setpoint from previous iteration.
-
+	ManualSmoothingZ _smoothing; /**< smoothing for velocity setpoints */
 };