media: atomisp: ia_css_debug: Removed unused codes for debug

This portion of the codes was not referenced so it can be completely
removed.

Link: https://lore.kernel.org/r/20230619052453.48598-2-hpa@redhat.com



Signed-off-by: Kate Hsuan <hpa@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>