media: atomisp: Remove yuvpp_mode

yuvpp_mode is never set, so it always is false remove it.

Link: https://lore.kernel.org/r/20230221145906.8113-10-hdegoede@redhat.com



Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>