drivers/mtd/nand/nandsim.c: remove duplicated #include

[Huang Weiyi]

Removed duplicated include <asm/div64.h> in 
drivers/mtd/nand/nandsim.c.

Signed-off-by: Huang Weiyi <weiyi.huang at gmail.com>

diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 556e813..ae7c577 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -38,7 +38,6 @@
 #include <linux/delay.h>
 #include <linux/list.h>
 #include <linux/random.h>
-#include <asm/div64.h>

 /* Default simulator parameters values */
 #if !defined(CONFIG_NANDSIM_FIRST_ID_BYTE)  || \