USB: Remove delay_t unused variable from sierra_ms.c driver initialisation code

trivial patch to remove unused delay_t varible
Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/storage/sierra_ms.c

@@ -126,13 +126,11 @@ static DEVICE_ATTR(truinst, S_IRUGO, show_truinst, NULL);
 int sierra_ms_init(struct us_data *us)
 {
 	int result, retries;
-	signed long delay_t;
 	struct swoc_info *swocInfo;
 	struct usb_device *udev;
 	struct Scsi_Host *sh;
 	struct scsi_device *sd;
 
-	delay_t = 2;
 	retries = 3;
 	result = 0;
 	udev = us->pusb_dev;