rtc: mx27rtc: remove redundant code in rtc_reset

As of commit 1a1fa24066 ("rtc: Set valid date after reset") the
command "date reset" will set the date/time to 2000-01-01 0:00:00 after
calling rtc_reset(). This means that the mx27rtc implementation of
rtc_reset() can be an empty stub function.

Signed-off-by: Chris Packham <judge.packham@gmail.com>

drivers/rtc/mx27rtc.c

@@ -61,9 +61,5 @@ int rtc_set(struct rtc_time *time)
 
 void rtc_reset(void)
 {
-	struct rtc_regs *rtc_regs = (struct rtc_regs *)IMX_RTC_BASE;
-
-	writel(0, &rtc_regs->dayr);
-	writel(0, &rtc_regs->hourmin);
-	writel(0, &rtc_regs->seconds);
+	/* nothing to do */
 }