usb: dwc3: gadget: remove condition that never happens

We don't use LST bit anymore, so this condition will
never trigger.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc3/gadget.c

@@ -1918,13 +1918,11 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
 
 	if (s_pkt && !chain)
 		return 1;
-	if ((event->status & DEPEVT_STATUS_LST) &&
-			(trb->ctrl & (DWC3_TRB_CTRL_LST |
-				DWC3_TRB_CTRL_HWO)))
-		return 1;
+
 	if ((event->status & DEPEVT_STATUS_IOC) &&
 			(trb->ctrl & DWC3_TRB_CTRL_IOC))
 		return 1;
+
 	return 0;
 }