[media] lirc: remove staging lirc_it87 and lirc_ite8709 drivers

Remove older drivers lirc_it87 and lirc_ite8709 from the LIRC staging area,
since they're now superceded by ite-cir.

Signed-off-by: Juan J. Garcia de Soria <skandalfo@gmail.com>
Tested-by: Stephan Raue <stephan@openelec.tv>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>