V4L/DVB (13480): atbm8830: fix compile warning

Fix this trivial compile warning:

v4l/atbm8830.c:164: warning: 'set_agc_config' defined but not used
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/atbm8830.c

@@ -161,15 +161,6 @@ static int is_locked(struct atbm_state *priv, u8 *locked)
 	return 0;
 }
 
-static int set_agc_config(struct atbm_state *priv,
-	u8 min, u8 max, u8 hold_loop)
-{
-	atbm8830_write_reg(priv, REG_AGC_MIN, min);
-	atbm8830_write_reg(priv, REG_AGC_MAX, max);
-	atbm8830_write_reg(priv, REG_AGC_HOLD_LOOP, hold_loop);
-
-	return 0;
-}
 
 static int set_static_channel_mode(struct atbm_state *priv)
 {