staging: comedi: amplc_pc236: no need to set hw_dev

The call to `comedi_set_hw_dev()` from `pc236_pci_common_attach()` is
now unnecessary since `pc236_pci_common_attach()` is now only called
from this driver's `auto_attach` hook `pc236_auto_attach()` and the
comedi core now calls `comedi_set_hw_dev()` before calling that.  Remove
the unnecessary call.
Signed-off-by: NIan Abbott <abbotti@mev.co.uk>
Reviewed-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/amplc_pc236.c

@@ -358,8 +358,6 @@ static int pc236_pci_common_attach(struct comedi_device *dev,
 	unsigned long iobase;
 	int ret;
 
-	comedi_set_hw_dev(dev, &pci_dev->dev);
-
 	ret = comedi_pci_enable(dev);
 	if (ret)
 		return ret;