Bauhn powerstrip: remove explicit icon for outlet

One outlet was different from the others.

custom_components/tuya_local/devices/bauhn_ap5w0624_powerstrip.yaml

@@ -44,7 +44,6 @@ entities:
     translation_key: outlet_x
     translation_placeholders:
       x: "5"
-    icon: mdi:power-socket-au
     class: outlet
     dps:
       - id: 5