Himox H06: remove tuya API style scale/step/range info

Tuya Cloud API scale means number of decimal places to shift.
tuya-local convention for scale is as a multiplier.
No scale and step 1 are the default, so no need to include them.
range is not needed on read-only values, as we never need to limit them.

custom_components/tuya_local/devices/himox_h06_purifier.yaml

@@ -26,11 +26,6 @@ secondary_entities:
         name: sensor
         readonly: true
         unit: "%"
-        range:
-          min: 0
-          max: 100
-        scale: 0
-        step: 1
   - entity: light
     name: AQ Indicator
     category: config
@@ -70,11 +65,6 @@ secondary_entities:
         name: sensor
         readonly: true
         unit: "min"
-        range:
-          min: 0
-          max: 480
-        scale: 0
-        step: 1
   - entity: sensor
     name: Air Quality
     dps: