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

Remove duplicated include.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -27,8 +27,6 @@
 #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>