delete module's redundant print_status()

- we can already get the running status from ModuleBase and the other misc information is already available through perf or uORB

src/modules/fw_pos_control_l1/FixedwingPositionControl.hpp

@@ -145,9 +145,6 @@ public:
 
 	bool init();
 
-	/** @see ModuleBase::print_status() */
-	int print_status() override;
-
 private:
 	orb_advert_t	_mavlink_log_pub{nullptr};