staging: comedi: addi_apci_1032: remove dw_AiBase

This board does not use the ioremap'ed PCI bar 3 memory address.
Remove the ioremap and iounmap of that region.

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>