thermal: qoriq: remove useless call for of_thermal_get_trip_points()

Building this driver with W=1 reports:
  warning: variable 'trip' set but not used [-Wunused-but-set-variable]

The call for of_thermal_get_trip_points() is useless.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

drivers/thermal/qoriq_thermal.c

@@ -195,7 +195,6 @@ static struct thermal_zone_of_device_ops tmu_tz_ops = {
 static int qoriq_tmu_probe(struct platform_device *pdev)
 {
 	int ret;
-	const struct thermal_trip *trip;
 	struct qoriq_tmu_data *data;
 	struct device_node *np = pdev->dev.of_node;
 	u32 site = 0;
@@ -243,8 +242,6 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
 		goto err_tmu;
 	}
 
-	trip = of_thermal_get_trip_points(data->tz);
-
 	/* Enable monitoring */
 	site |= 0x1 << (15 - data->sensor_id);
 	tmu_write(data, site | TMR_ME | TMR_ALPF, &data->regs->tmr);