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>

drivers/staging/comedi/drivers/usbduxsigma.c

@@ -1590,16 +1590,12 @@ static int usbdux_dio_insn_bits(struct comedi_device *dev,
 	return insn->n;
 }
 
-static void usbduxsub_unlink_PwmURBs(struct usbduxsub *devpriv)
+static void usbdux_pwm_stop(struct usbduxsub *devpriv, int do_unlink)
 {
+	if (do_unlink) {
 		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);
+	}
 
 	devpriv->pwm_cmd_running = 0;
 }