ROMFS: use new param default mechanism

ROMFS/px4fmu_common/init.d/rc.rover_defaults

@@ -7,26 +7,18 @@
 
 set VEHICLE_TYPE rover
 
-if [ $AUTOCNF = yes ]
-then
 #
 # Default parameters for UGVs.
 #
-	param set MIS_LTRMIN_ALT 0.01
-	param set MIS_TAKEOFF_ALT 0.01
+param set-default MIS_LTRMIN_ALT 0.01
+param set-default MIS_TAKEOFF_ALT 0.01
 
-	param set NAV_DLL_ACT 0
-	param set NAV_ACC_RAD 2
-	param set NAV_LOITER_RAD 2
+param set-default NAV_DLL_ACT 0
+param set-default NAV_ACC_RAD 2
+param set-default NAV_LOITER_RAD 2
 
-	# Temporary.
-	param set NAV_FW_ALT_RAD 1000
-fi
-
-if param greater -s NAV_LOITER_RAD 2.5
-then
-	param set NAV_LOITER_RAD 2
-fi
+# Temporary.
+param set-default NAV_FW_ALT_RAD 1000
 
 #
 # Enable servo output on pins 3 and 4 (steering and thrust)