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>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index c18bf1c..835a5dc 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1918,13 +1918,11 @@
 
 	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;
 }