staging: octeon-usb: remove duplicated include from octeon-hcd.c

Remove duplicated include.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/octeon-usb/octeon-hcd.c

@@ -11,7 +11,6 @@
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
-#include <linux/platform_device.h>
 #include <linux/usb.h>
 
 #include <asm/time.h>