usb: dwc3: gadget: remove udelay(1) when sending ep cmds

When we send an endpoint command, we want that to
complete as soon as possible, so let's remove the
unnecessary udelay(1) call.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc3/gadget.c

@@ -334,8 +334,6 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 			ret = -ETIMEDOUT;
 			break;
 		}
-
-		udelay(1);
 	} while (1);
 
 	if (unlikely(susphy)) {