mission_param: remove MIS_YAWMODE

src/modules/navigator/mission_params.c

@@ -119,21 +119,6 @@ PARAM_DEFINE_FLOAT(MIS_DIST_WPS, 900);
  */
 PARAM_DEFINE_INT32(MIS_ALTMODE, 1);
 
-/**
- * Multirotor only. Yaw setpoint mode.
- *
- * The values are defined in the enum mission_altitude_mode
- *
- * @min 0
- * @max 3
- * @value 0 Heading as set by waypoint
- * @value 1 Heading towards waypoint
- * @value 2 Heading towards home
- * @value 3 Heading away from home
- * @group Mission
- */
-PARAM_DEFINE_INT32(MIS_YAWMODE, 1);
-
 /**
 * Enable yaw control of the mount. (Only affects multicopters and ROI mission items)
 *