clocksource: sirf: Remove unused variable

Commit ef89af1f4380 ("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 <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>

drivers/clocksource/timer-marco.c

···
 /* 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);