actuator outputs: always add reverse range param

and remove the possibility to set min > max to reverse.

Initially the idea was to add the checkbox on the UI side, to avoid adding
another param, but I don't think I'll go through the extra effort on the
QGC side.

src/drivers/uavcan/module.yaml

@@ -1,6 +1,5 @@
 module_name: UAVCAN
 actuator_output:
-  add_reverse_range_param: true
   show_subgroups_if: 'UAVCAN_ENABLE>=3'
   config_parameters:
     - param: 'UAVCAN_ENABLE'