Remove COM_POSCTL_NAVL

In an effort to reduce configuration space.
I've not seen use for this option.
If a pilot flies manually in position mode he has some visual reference of the vehicle and can do better than an autonomous mode without position reference.
Also by now we have nudging in Descend mode so the pilot can still give input and the only difference is it automatically goes down instead of the pilot having to descend by stick to land.

src/modules/commander/UserModeIntention.hpp

@@ -35,7 +35,6 @@
 
 #include <uORB/topics/vehicle_status.h>
 #include "HealthAndArmingChecks/HealthAndArmingChecks.hpp"
-#include <px4_platform_common/module_params.h>
 
 enum class ModeChangeSource {
 	User,           ///< RC or MAVLink
@@ -58,10 +57,10 @@ public:
 };
 
 
-class UserModeIntention : ModuleParams
+class UserModeIntention
 {
 public:
-	UserModeIntention(ModuleParams *parent, const vehicle_status_s &vehicle_status,
+	UserModeIntention(const vehicle_status_s &vehicle_status,
 			  const HealthAndArmingChecks &health_and_arming_checks, ModeChangeHandler *handler);
 	~UserModeIntention() = default;
 
@@ -102,8 +101,4 @@ private:
 
 	bool _ever_had_mode_change{false}; ///< true if there was ever a mode change call (also if the same mode as already set)
 	bool _had_mode_change{false}; ///< true if there was a mode change call since the last getHadModeChangeAndClear()
-
-	DEFINE_PARAMETERS(
-		(ParamInt<px4::params::COM_POSCTL_NAVL>) _param_com_posctl_navl
-	);
 };