media: staging: rkisp1: remove unused field ctrl_handler from struct rkisp1_device

The field ctrl_handler in struct rkisp1_device is not used.
This patch removes it.
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Acked-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/rkisp1/rkisp1-common.h

@@ -255,7 +255,6 @@ struct rkisp1_device {
 	unsigned int clk_size;
 	struct clk_bulk_data clks[RKISP1_MAX_BUS_CLK];
 	struct v4l2_device v4l2_dev;
-	struct v4l2_ctrl_handler ctrl_handler;
 	struct media_device media_dev;
 	struct v4l2_async_notifier notifier;
 	struct rkisp1_sensor_async *active_sensor;