staging: axis-fifo: remove duplicated include from axis-fifo.c

Remove duplicated include.

Signed-off-by: YueHaibing <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/axis-fifo/axis-fifo.c

···
 #include <linux/interrupt.h>
 #include <linux/param.h>
 #include <linux/fs.h>
-#include <linux/device.h>
-#include <linux/cdev.h>
 #include <linux/types.h>
 #include <linux/uaccess.h>
 #include <linux/jiffies.h>