rtc: mxc: remove UIE signaling

The RTC core handles it since 6610e08 (RTC: Rework RTC code to use
timerqueue for events).

Signed-off-by: Wolfram Sang <[e-mail]>
Signed-off-by: Alexandre Belloni <[e-mail]>

drivers/rtc/rtc-mxc.c

···
 		mxc_rtc_irq_enable(&pdev->dev, RTC_ALM_BIT, 0);
 	}
 
-	if (status & RTC_1HZ_BIT)
-		events |= (RTC_UF | RTC_IRQF);
-
 	if (status & PIT_ALL_ON)
 		events |= (RTC_PF | RTC_IRQF);