usb: dwc3: ep0: fix compile warning

commit 34c60a7 (usb: dwc3: ep0: tidy up Pending
Request handling) introduced a compile warning
by leaving an unused variable.

This patch fixes that warning:

drivers/usb/dwc3/ep0.c: In function ‘__dwc3_gadget_ep0_queue’:
drivers/usb/dwc3/ep0.c:129:8: warning: unused variable ‘type’
[-Wunused-variable]
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/dwc3/ep0.c

@@ -126,7 +126,6 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep,
 		struct dwc3_request *req)
 {
 	struct dwc3		*dwc = dep->dwc;
-	u32			type;
 	int			ret = 0;
 
 	req->request.actual	= 0;