param remove empty @unit

src/modules/navigator/datalinkloss_params.c

@@ -107,7 +107,6 @@ PARAM_DEFINE_FLOAT(NAV_DLL_AH_T, 120.0f);
  * After more than this number of data link timeouts the aircraft returns home directly
  *
  * @group Data Link Loss
- * @unit
  * @min 0
  * @max 1000
  */

src/modules/navigator/geofence_params.c

@@ -96,7 +96,6 @@ PARAM_DEFINE_INT32(GF_SOURCE, 0);
  *
  * Set how many subsequent position measurements outside of the fence are needed before geofence violation is triggered
  *
- * @unit
  * @min -1
  * @max 10
  * @group Geofence

src/modules/navigator/gpsfailure_params.c

@@ -84,7 +84,6 @@ PARAM_DEFINE_FLOAT(NAV_GPSF_P, 0.0f);
  *
  * Thrust value which is set during the open loop loiter
  *
- * @unit
  * @min 0.0
  * @max 1.0
  * @group GPS Failure Navigation

src/modules/navigator/mission_params.c

@@ -144,7 +144,6 @@ PARAM_DEFINE_INT32(MIS_YAWMODE, 1);
  * Mainly useful for VTOLs that have less yaw authority and might not reach target
  * yaw in wind. Disabled by default.
  *
- * @unit
  * @min -1
  * @max 20
  * @unit second