staging: comedi: addi_common: remove i_IorangeBase3 from boardinfo

When it is used, the entire PCI bar is ioremap'ed with pci_ioremap_bar().
The i_IorangeBase3 boardinfo is no longer needed.

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