removed class enum from working status sensor

custom_components/tuya_local/devices/ferroli_titano_twin.yaml

@@ -71,7 +71,6 @@ secondary_entities:
             value: E6 clock RTC failure
   - entity: sensor
     name: Working status
-    class: enum
     category: diagnostic
     dps:
       - id: 102
@@ -105,5 +104,4 @@ secondary_entities:
         name: sensor
         unit: C
         class: measurement
-
-            
+