fix(tonepie_t1pro_catlitterbox_max): remove invalid device class

Same issue as PR #5075

custom_components/tuya_local/devices/tonepie_t1pro_catlitterbox_max.yaml

@@ -235,7 +235,6 @@ entities:
   - entity: sensor
     name: Total visits
     icon: "mdi:counter"
-    class: measurement
     category: diagnostic
     dps:
       - id: 7