thermal/drivers/ti-soc: Remove redundant msg in ti_thermal_expose_sensor()

The upper-layer devm_thermal_add_hwmon_sysfs() function can directly
print error information.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Acked-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230620090732.50025-8-frank.li@vivo.com

drivers/thermal/ti-soc-thermal/ti-thermal-common.c

@@ -182,8 +182,7 @@ int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
 	ti_bandgap_write_update_interval(bgp, data->sensor_id,
 					 TI_BANDGAP_UPDATE_INTERVAL_MS);
 
-	if (devm_thermal_add_hwmon_sysfs(bgp->dev, data->ti_thermal))
-		dev_warn(bgp->dev, "failed to add hwmon sysfs attributes\n");
+	devm_thermal_add_hwmon_sysfs(bgp->dev, data->ti_thermal);
 
 	return 0;
 }