rtc: mc13xxx: remove UIE signaling

The RTC core handles it since 6610e089 (RTC: Rework RTC code to use
timerqueue for events). So far, only the callbacks to the RTC core have
been removed, but not the handlers. Do this now.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-mc13xxx.c

@@ -250,18 +250,6 @@ static irqreturn_t mc13xxx_rtc_alarm_handler(int irq, void *dev)
 	return IRQ_HANDLED;
 }
 
-static irqreturn_t mc13xxx_rtc_update_handler(int irq, void *dev)
-{
-	struct mc13xxx_rtc *priv = dev;
-	struct mc13xxx *mc13xxx = priv->mc13xxx;
-
-	rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_UF);
-
-	mc13xxx_irq_ack(mc13xxx, irq);
-
-	return IRQ_HANDLED;
-}
-
 static const struct rtc_class_ops mc13xxx_rtc_ops = {
 	.read_time = mc13xxx_rtc_read_time,
 	.set_mmss64 = mc13xxx_rtc_set_mmss,
@@ -307,11 +295,6 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_irq_request;
 
-	ret = mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_1HZ,
-			mc13xxx_rtc_update_handler, DRIVER_NAME, priv);
-	if (ret)
-		goto err_irq_request;
-
 	ret = mc13xxx_irq_request_nounmask(mc13xxx, MC13XXX_IRQ_TODA,
 			mc13xxx_rtc_alarm_handler, DRIVER_NAME, priv);
 	if (ret)
@@ -326,7 +309,6 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev)
 
 err_irq_request:
 	mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_TODA, priv);
-	mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_1HZ, priv);
 	mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_RTCRST, priv);
 
 	mc13xxx_unlock(mc13xxx);
@@ -341,7 +323,6 @@ static int mc13xxx_rtc_remove(struct platform_device *pdev)
 	mc13xxx_lock(priv->mc13xxx);
 
 	mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_TODA, priv);
-	mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_1HZ, priv);
 	mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_RTCRST, priv);
 
 	mc13xxx_unlock(priv->mc13xxx);