Blackfin: drop duplicate sched_clock

The Blackfin sched_clock() func is pretty much a duplicate of the common
version, so just punt it.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/kernel/time.c b/arch/blackfin/kernel/time.c
index bd3b53d..13c1ee3 100644
--- a/arch/blackfin/kernel/time.c
+++ b/arch/blackfin/kernel/time.c
@@ -184,11 +184,3 @@
 
 	time_sched_init(timer_interrupt);
 }
-
-/*
- * Scheduler clock - returns current time in nanosec units.
- */
-unsigned long long sched_clock(void)
-{
-	return (unsigned long long)jiffies *(NSEC_PER_SEC / HZ);
-}