dt-bindings: media: rc: Fix redundant string

The linux,rc-map-name property is described using an enum, yet a value has
been put in that enum twice, resulting in a warning. Let's fix that.

Fixes: 7c31b9d ("media: dt-bindings: media: Add YAML schemas for the generic RC bindings")
Signed-off-by: Maxime Ripard <[email protected]>
Signed-off-by: Rob Herring <[email protected]>

Author: mripard

Documentation/devicetree/bindings/media/rc.yaml

@@ -73,7 +73,6 @@ properties:
           - rc-genius-tvgo-a11mce
           - rc-gotview7135
           - rc-hauppauge
-          - rc-hauppauge
           - rc-hisi-poplar
           - rc-hisi-tv-demo
           - rc-imon-mce