RGBCW lightbulb: revert accidental WIP changes

Some unfinished changes mainly for debugging other issues were accidentally committed with the motion light changes.  Revert to the working config.

custom_components/tuya_local/devices/rgbcw_lightbulb.yaml

@@ -97,15 +97,3 @@ secondary_entities:
         mapping:
           - scale: 60
             step: 60
-  - entity: select
-    name: Scene
-    icon: "mdi:palette"
-    category: config
-    dps:
-      - id: 25
-        type: string
-        name: option
-        mapping:
-          - dps_val: 01
-            value: 
-