V4L/DVB (11644): gspca - m5602-s5k4aa: Remove some unneeded init code.

Remove some redundant init from the s5k4aa. All these registers are programmed again later in the init phase

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>