thermal/drivers/rcar: Remove notification usage

BugLink: https://bugs.launchpad.net/bugs/1906168

The ops is only showing a trace telling a critical trip point is
crossed. The same information is given by the thermal framework.

This is redundant, remove the code.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20201210121514.25760-4-daniel.lezcano@linaro.org
(cherry picked from commit 1fa34e4)
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Timo Aaltonen <timo.aaltonen@canonical.com>

drivers/thermal/rcar_thermal.c

@@ -323,24 +323,6 @@ static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone,
 	return 0;
 }
 
-static int rcar_thermal_notify(struct thermal_zone_device *zone,
-			       int trip, enum thermal_trip_type type)
-{
-	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
-	struct device *dev = rcar_priv_to_dev(priv);
-
-	switch (type) {
-	case THERMAL_TRIP_CRITICAL:
-		/* FIXME */
-		dev_warn(dev, "Thermal reached to critical temperature\n");
-		break;
-	default:
-		break;
-	}
-
-	return 0;
-}
-
 static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = {
 	.get_temp	= rcar_thermal_of_get_temp,
 };
@@ -349,7 +331,6 @@ static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 	.get_trip_type	= rcar_thermal_get_trip_type,
 	.get_trip_temp	= rcar_thermal_get_trip_temp,
-	.notify		= rcar_thermal_notify,
 };
 
 /*