Input: zforce - remove duplicated include

Remove duplicated include for delay.h.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: Heiko Stuebner <heiko.stuebner@bq.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/zforce_ts.c

@@ -30,7 +30,6 @@
 #include <linux/input/mt.h>
 #include <linux/platform_data/zforce_ts.h>
 #include <linux/regulator/consumer.h>
-#include <linux/delay.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>