RTL was broken by a recent change, revert

Revert "for multicopter landings make sure that the copter moves"

This reverts commit ad1058d3742bbfa9cbd16648aa2925fa1e618a55.

src/modules/navigator/mission.cpp

@@ -150,6 +150,7 @@ void
 Mission::on_active()
 {
 	check_mission_valid();
+
 	/* check if anything has changed */
 	bool onboard_updated = false;
 	orb_check(_navigator->get_onboard_mission_sub(), &onboard_updated);
@@ -180,12 +181,6 @@ Mission::on_active()
 
 	} else if (_mission_type != MISSION_TYPE_NONE &&_param_altmode.get() == MISSION_ALTMODE_FOH) {
 		altitude_sp_foh_update();
-	} else if (_mission_item.nav_cmd == NAV_CMD_LAND && _waypoint_position_reached && _navigator->get_vstatus()->is_rotary_wing) {
-		// the copter has reached the landing spot location
-		// set the same landing item again but this time the vehicle will actually
-		// descend and land
-		set_mission_item_reached();
-		set_mission_items();
 	} else {
 		/* if waypoint position reached allow loiter on the setpoint */
 		if (_waypoint_position_reached && _mission_item.nav_cmd != NAV_CMD_IDLE) {