thermal/of: Remove of_thermal_set_trip_hyst()

The thermal core is providing the generic thermal_zone_set_trip()
function which does exactly what the OF ops function is doing.

It is pointless to define our own version, just remove the ops and the
thermal_zone_set_trip() will take care of it.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20221003092602.1323944-19-daniel.lezcano@linaro.org

drivers/thermal/thermal_of.c

@@ -19,18 +19,6 @@
 
 #include "thermal_core.h"
 
-static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
-				    int hyst)
-{
-	if (trip >= tz->num_trips || trip < 0)
-		return -EDOM;
-
-	/* thermal framework should take care of data->mask & (1 << trip) */
-	tz->trips[trip].hysteresis = hyst;
-
-	return 0;
-}
-
 static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
 				    int *temp)
 {
@@ -543,7 +531,6 @@ struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor,
 		goto out_kfree_trips;
 	}
 
-	of_ops->set_trip_hyst = of_ops->set_trip_hyst ? : of_thermal_set_trip_hyst;
 	of_ops->get_crit_temp = of_ops->get_crit_temp ? : of_thermal_get_crit_temp;
 	of_ops->bind = thermal_of_bind;
 	of_ops->unbind = thermal_of_unbind;