clocksource/drivers/exynos_mct: Remove unused header includes

The driver does not use sched.h and platform_device.h.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>

drivers/clocksource/exynos_mct.c

···
  * published by the Free Software Foundation.
 */
 
-#include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/clockchips.h>
 #include <linux/cpu.h>
-#include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/percpu.h>
 #include <linux/of.h>