[media] media: i2c: ths7303: remove unused member driver_data

This patch removes the driver_data member from ths7303_state structure.
The driver_data member was intended to differentiate between ths7303 and
ths7353 chip and get the g_chip_ident, But as of now g_chip_ident is
obsolete, so there is no need of driver_data.

Signed-off-by: Lad, Prabhakar <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/i2c/ths7303.c

···
 	struct v4l2_bt_timings		bt;
 	int std_id;
 	int stream_on;
-	int driver_data;
 };
 
 enum ths7303_filter_mode {
···
 	state->pdata = pdata;
 	sd = &state->sd;
 	v4l2_i2c_subdev_init(sd, client, &ths7303_ops);
-
-	/* store the driver data to differntiate the chip */
-	state->driver_data = (int)id->driver_data;
 
 	/* set to default 480I_576I filter mode */
 	if (ths7303_setval(sd, THS7303_FILTER_MODE_480I_576I) < 0) {