Staging: otus: includecheck fix: drivers/staging/otus/usbdrv.h

fix the following 'make includecheck' warning:

  drivers/staging/otus/usbdrv.h: linux/usb.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/otus/usbdrv.h

@@ -61,10 +61,6 @@
 #define USB_REG_IN_PIPE                     3
 #define USB_REG_OUT_PIPE                    4
 
-#if (WLAN_HOSTIF == WLAN_USB)
-#include <linux/usb.h>
-#endif
-
 #ifdef ZM_HOSTAPD_SUPPORT
 #include "athr_common.h"
 #endif