rtc: pcf2127: remove unnecessary #ifdef

There is not point in setting .ioctl to NULL when CONFIG_RTC_INTF_DEV is
not defined because it would not be called anyway.

Link: https://lore.kernel.org/r/20200505201310.255145-3-alexandre.belloni@bootlin.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-pcf2127.c

@@ -184,7 +184,6 @@ static int pcf2127_rtc_set_time(struct device *dev, struct rtc_time *tm)
 	return 0;
 }
 
-#ifdef CONFIG_RTC_INTF_DEV
 static int pcf2127_rtc_ioctl(struct device *dev,
 				unsigned int cmd, unsigned long arg)
 {
@@ -205,9 +204,6 @@ static int pcf2127_rtc_ioctl(struct device *dev,
 		return -ENOIOCTLCMD;
 	}
 }
-#else
-#define pcf2127_rtc_ioctl NULL
-#endif
 
 static const struct rtc_class_ops pcf2127_rtc_ops = {
 	.ioctl		= pcf2127_rtc_ioctl,