Remove local planar vector

src/lib/l1/ECL_L1_Pos_Controller.cpp

@@ -374,19 +374,6 @@ void ECL_L1_Pos_Controller::navigate_level_flight(float current_heading)
 	update_roll_setpoint();
 }
 
-Vector2f ECL_L1_Pos_Controller::get_local_planar_vector(const Vector2d &origin, const Vector2d &target) const
-{
-	/* this is an approximation for small angles, proposed by [2] */
-	const double x_angle = math::radians(target(0) - origin(0));
-	const double y_angle = math::radians(target(1) - origin(1));
-	const double x_origin_cos = cos(math::radians(origin(0)));
-
-	return Vector2f{
-		static_cast<float>(x_angle * CONSTANTS_RADIUS_OF_EARTH),
-		static_cast<float>(y_angle *x_origin_cos * CONSTANTS_RADIUS_OF_EARTH),
-	};
-}
-
 void ECL_L1_Pos_Controller::set_l1_period(float period)
 {
 	_L1_period = period;

src/lib/l1/ECL_L1_Pos_Controller.hpp

@@ -230,19 +230,6 @@ private:
 	bool _has_guidance_updated =
 		false;	///< this flag is set to true by any of the guidance methods. This flag has to be manually reset using has_guidance_updated_reset()
 
-	/**
-	 * Convert a 2D vector from WGS84 to planar coordinates.
-	 *
-	 * This converts from latitude and longitude to planar
-	 * coordinates with (0,0) being at the position of ref and
-	 * returns a vector in meters towards wp.
-	 *
-	 * @param ref The reference position in WGS84 coordinates
-	 * @param wp The point to convert to into the local coordinates, in WGS84 coordinates
-	 * @return The vector in meters pointing from the reference position to the coordinates
-	 */
-	matrix::Vector2f get_local_planar_vector(const matrix::Vector2d &origin, const matrix::Vector2d &target) const;
-
 	/**
 	 * Update roll angle setpoint. This will also apply slew rate limits if set.
 	 *