clocksource: sirf: Remove unused variable

Commit ef89af1f ("clocksource: sirf: Remove hard-coded clock rate")
removes all uses of the timer_div variable. Since the variable is no
longer used it should be removed.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/clocksource/timer-marco.c

@@ -257,7 +257,6 @@ static void __init sirfsoc_clockevent_init(void)
 /* initialize the kernel jiffy timer source */
 static void __init sirfsoc_marco_timer_init(struct device_node *np)
 {
-	u32 timer_div;
 	struct clk *clk;
 
 	clk = of_clk_get(np, 0);