package/kodi: Remove hyperflous option --disable-dvdcss

The option is controlled later on inside this if-clause

ifeq ($(BR2_PACKAGE_KODI_OPTICALDRIVE),y)

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>