ET-72W update: Apply PR feedback

- Remove unit

custom_components/tuya_local/devices/jiahong_et72w_thermostat.yaml

@@ -223,7 +223,6 @@ entities:
       - id: 116
         type: integer
         name: option
-        unit: W
         mapping:
           - dps_val: 3950
             value: "3950 W"