V4L/DVB (11463): gspca - m5602-po1030: Remove unneeded init sequences

po1030: There's a lot of redundant writes to the bridge and sensor.
Remove them.

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