staging: comedi: usbduxsigma: absorb usbduxsub_unlink_PwmURBs() into caller

This function is only called by usbdux_pwm_stop(). Absorb it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c
index 2c8f78b..08710bf 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -1590,16 +1590,12 @@
 	return insn->n;
 }
 
-static void usbduxsub_unlink_PwmURBs(struct usbduxsub *devpriv)
-{
-	if (devpriv->urbPwm)
-		usb_kill_urb(devpriv->urbPwm);
-}
-
 static void usbdux_pwm_stop(struct usbduxsub *devpriv, int do_unlink)
 {
-	if (do_unlink)
-		usbduxsub_unlink_PwmURBs(devpriv);
+	if (do_unlink) {
+		if (devpriv->urbPwm)
+			usb_kill_urb(devpriv->urbPwm);
+	}
 
 	devpriv->pwm_cmd_running = 0;
 }