navigator fix mission_result increment and sign mismatch

src/modules/navigator/navigator_main.cpp

@@ -1128,10 +1128,6 @@ Navigator::publish_mission_result()
 		_mission_result_pub = orb_advertise(ORB_ID(mission_result), &_mission_result);
 	}
 
-	// Don't reset current waypoint because it won't be updated e.g. if not in mission mode
-	// however, the current is still valid and therefore helpful for ground stations.
-	//_mission_result.seq_current = 0;
-
 	/* reset some of the flags */
 	_mission_result.item_do_jump_changed = false;
 	_mission_result.item_changed_index = 0;