[ARM] sa1100: remove boot time RTC initialisation

The RTC library code contains everything necessary to set the
system time from the RTC; for similar reasons as the previous
commit, it's far better to let the RTC library code sort this
out rather than implement something which might not be
appropriate for everyone.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-sa1100/time.c

@@ -21,25 +21,6 @@
 #define RTC_DEF_DIVIDER		(32768 - 1)
 #define RTC_DEF_TRIM            0
 
-static unsigned long __init sa1100_get_rtc_time(void)
-{
-	/*
-	 * According to the manual we should be able to let RTTR be zero
-	 * and then a default divisor for a 32.768KHz clock is used.
-	 * Apparently this doesn't work, at least for my SA1110 rev 5.
-	 * If the clock divider is uninitialized then reset it to the
-	 * default value to get the 1Hz clock.
-	 */
-	if (RTTR == 0) {
-		RTTR = RTC_DEF_DIVIDER + (RTC_DEF_TRIM << 16);
-		printk(KERN_WARNING "Warning: uninitialized Real Time Clock\n");
-		/* The current RTC value probably doesn't make sense either */
-		RCNR = 0;
-		return 0;
-	}
-	return RCNR;
-}
-
 static int sa1100_set_rtc(void)
 {
 	unsigned long current_time = xtime.tv_sec;
@@ -117,15 +98,10 @@ static struct irqaction sa1100_timer_irq = {
 
 static void __init sa1100_timer_init(void)
 {
-	struct timespec tv;
 	unsigned long flags;
 
 	set_rtc = sa1100_set_rtc;
 
-	tv.tv_nsec = 0;
-	tv.tv_sec = sa1100_get_rtc_time();
-	do_settimeofday(&tv);
-
 	OIER = 0;		/* disable any timer interrupts */
 	OSSR = 0xf;		/* clear status on all timers */
 	setup_irq(IRQ_OST0, &sa1100_timer_irq);