V4L/DVB (11808): au0828: get rid of debug printk that was causing compile failures

Remove a debug printk() line I added which is no longer needed, and happened
to be causing compile failures on some earlier kernels in Han's daily
compile report.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>