media: i2c: mt9v111: Do not set clock rate manually

media: i2c: mt9v111: Do not set clock rate manually

The driver retrieves the rate of the external at probe time, and then
reprograms that clock with the same rate when powering on the device.
Setting the clock rate is not needed, drop it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>