FlightTaskAuto: remove unused _getTargetVelocityXY()

Inclusive velocity_valid field in position_setpoint message that's then
no longer needed.

Signed-off-by: Silvan Fuhrer <silvan@auterion.com>

src/modules/flight_mode_manager/tasks/Auto/FlightTaskAuto.cpp

@@ -599,23 +599,6 @@ bool FlightTaskAuto::_evaluateGlobalReference()
 	return PX4_ISFINITE(_reference_altitude) && PX4_ISFINITE(ref_lat) && PX4_ISFINITE(ref_lon);
 }
 
-Vector2f FlightTaskAuto::_getTargetVelocityXY()
-{
-	// guard against any bad velocity values
-	const float vx = _sub_triplet_setpoint.get().current.vx;
-	const float vy = _sub_triplet_setpoint.get().current.vy;
-	bool velocity_valid = PX4_ISFINITE(vx) && PX4_ISFINITE(vy) &&
-			      _sub_triplet_setpoint.get().current.velocity_valid;
-
-	if (velocity_valid) {
-		return Vector2f(vx, vy);
-
-	} else {
-		// just return zero speed
-		return Vector2f{};
-	}
-}
-
 State FlightTaskAuto::_getCurrentState()
 {
 	// Calculate the vehicle current state based on the Navigator triplets and the current position.

src/modules/flight_mode_manager/tasks/Auto/FlightTaskAuto.hpp

@@ -94,7 +94,6 @@ public:
 	void overrideCruiseSpeed(const float cruise_speed_m_s) override;
 
 protected:
-	matrix::Vector2f _getTargetVelocityXY(); /**< only used for follow-me and only here because of legacy reason.*/
 	void _updateInternalWaypoints(); /**< Depending on state of vehicle, the internal waypoints might differ from target (for instance if offtrack). */
 	bool _compute_heading_from_2D_vector(float &heading, matrix::Vector2f v); /**< Computes and sets heading a 2D vector */