usb: gadget: uvc: Remove the hardcoded default color matching

A hardcoded default color matching descriptor is embedded in struct
f_uvc_opts but no longer has any use - remove it.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230202114142.300858-5-dan.scally@ideasonboard.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>