GW motor roller blind: use dp 101 for current position

From comments in PR #2788, 101 appears to be most reliable of many options.

custom_components/tuya_local/devices/gw_motor_roller_blind.yaml

@@ -2,8 +2,6 @@ name: Roller blind
 products:
   - id: slrxhmozdm3qq9cl
     manufacturer: GW Motor
-    model: Roller blind
-    name: Sub-device roller blind (gateway)
 entities:
   - entity: cover
     class: blind
@@ -12,25 +10,13 @@ entities:
         name: control
         type: string
         mapping:
-          - conditions:
-              - dps_val: ["0", "1", "2"]
-                mapping:
-                  - dps_val: "0"
-                    value: open
-                  - dps_val: "1"
-                    value: close
-                  - dps_val: "2"
-                    value: stop
-              # set options when there are non during startup
-              - dps_val: null
-                mapping:
-                  - dps_val: open
-                    value: open
-                  - dps_val: close
-                    value: close
-                  - dps_val: stop
-                    value: stop
-      - id: 2
+          - dps_val: "0"
+            value: open
+          - dps_val: "1"
+            value: close
+          - dps_val: "2"
+            value: stop
+      - id: 101
         # this is percent_control in API Explorer but we'll use it to get the
         # last position set, as the device cannot report its current_position.
         # will be incorrect when manually opening / closing.