Ecolink Flood/Freeze Sensor - hiding phantom Motion Sensor device


I have an Ecolink Z-Wave Plus Flood/Freeze sensor which is working fine - I added it as a generic Z-Wave device, and see two devices in Vera - one flood sensor and one freeze sensor. But I also see a phantom motion sensor associated with each. Is there any way to hide the phantom motion sensors? FWIW, a Luup sdata request shows the flood sensor as the parent of the freeze sensor and both phantom motion sensors.