remove proto for unused function limit_thrust_during_landing()

Author: BazookaJoe1900

src/modules/mc_pos_control/MulticopterPositionControl.hpp

@@ -223,13 +223,6 @@ class MulticopterPositionControl : public ModuleBase<MulticopterPositionControl>
 	 */
 	PositionControlStates set_vehicle_states(const vehicle_local_position_s &local_pos);
 
-	/**
-	 * Adjust the setpoint during landing.
-	 * Thrust is adjusted to support the land-detector during detection.
-	 * @param setpoint gets adjusted based on land-detector state
-	 */
-	void limit_thrust_during_landing(vehicle_attitude_setpoint_s &setpoint);
-
 	/**
 	 * Failsafe.
 	 * If flighttask fails for whatever reason, then do failsafe. This could