Eruilink curtain: position seems not to be reversed on these curtains

Other tuya curtains have used 100 for closed and 0 for open, but that
does not appear to be the case here.

Issue #1735

custom_components/tuya_local/devices/eruiklink_curtains.yaml

@@ -22,16 +22,12 @@ primary_entity:
       range:
         min: 0
         max: 100
-      mapping:
-        - invert: true
     - id: 3
       type: integer
       name: current_position
       range:
         min: 0
         max: 100
-      mapping:
-        - invert: true
     - id: 7
       type: string
       name: unreliable_action