V4L/DVB (4684): Drivers/media/video/cx88: Remove unused defined FALSE/TRUE

Remove defines of FALSE/TRUE because they are not used.

Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>