cleanup(remora_heatpump): remove unnecessary icon overrides

custom_components/tuya_local/devices/remora_heatpump.yaml

@@ -9,12 +9,8 @@ entities:
         mapping:
           - dps_val: false
             value: "off"
-            icon: "mdi:hvac-off"
-            icon_priority: 1
           - dps_val: true
             value: "heat"
-            icon: "mdi:hot-tub"
-            icon_priority: 3
       - id: 2
         name: temperature
         type: integer