staging: comedi: usbduxsigma: remove unnecessary check in usbdux_ao_cmd()

The comedi core verifies that the command chanlist_len is valid for
the subdevice based on the len_chanlist that was setup during the
attach. There is no need to recheck it in the (*cmd) function.
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

@@ -1189,12 +1189,6 @@ static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	for (i = 0; i < cmd->chanlist_len; ++i) {
 		chan = CR_CHAN(cmd->chanlist[i]);
 		gain = CR_RANGE(cmd->chanlist[i]);
-		if (i >= NUMOUTCHANNELS) {
-			dev_err(&this_usbduxsub->interface->dev,
-				"comedi%d: %s: channel list too long\n",
-				dev->minor, __func__);
-			break;
-		}
 		this_usbduxsub->dac_commands[i] = chan;
 		dev_dbg(&this_usbduxsub->interface->dev,
 			"comedi%d: dac command for ch %d is %x\n",