[media] ths8200: fix two compiler warnings

drivers/media/i2c/ths8200.c: In function ‘ths8200_g_register’:
drivers/media/i2c/ths8200.c:121:21: warning: unused variable ‘client’ [-Wunused-variable]
drivers/media/i2c/ths8200.c: In function ‘ths8200_s_register’:
drivers/media/i2c/ths8200.c:132:21: warning: unused variable ‘client’ [-Wunused-variable]

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/i2c/ths8200.c

@@ -118,8 +118,6 @@ ths8200_write_and_or(struct v4l2_subdev *sd, u8 reg,
 static int ths8200_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
 	reg->val = ths8200_read(sd, reg->reg & 0xff);
 	reg->size = 1;
 
@@ -129,8 +127,6 @@ static int ths8200_g_register(struct v4l2_subdev *sd,
 static int ths8200_s_register(struct v4l2_subdev *sd,
 			      const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
 	ths8200_write(sd, reg->reg & 0xff, reg->val & 0xff);
 
 	return 0;