Rotenso Ronix: use available translation

PR #2955

custom_components/tuya_local/devices/rotenso_ronix_heatpump.yaml

@@ -232,9 +232,8 @@ entities:
         name: switch
         mask: "0001"
   - entity: switch
-    name: Anti-frost mode
+    translation_key: anti_frost
     category: config
-    icon: "mdi:snowflake-thermometer"
     dps:
       - id: 123
         type: hex