staging: comedi: amplc_dio200: cleanup dev->board_name usage

This legacy driver does no additional probing so the dev->board_name
will already be properly initialized by the comedi core before calling
the (*attach) function.

Remove the unnecessary initialization of dev->board_name.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/amplc_dio200.c

@@ -292,7 +292,6 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	unsigned int irq;
 	int ret;
 
-	dev->board_name = thisboard->name;
 	iobase = it->options[0];
 	irq = it->options[1];
 	dev_info(dev->class_dev, "%s: attach %s 0x%lX,%u\n",