staging: comedi: adl_pci9118: cards have same vendor ID

Don't bother recording the PCI vendor ID of each board in `boardtypes[]`
as they are all the same and the code doesn't use it anyway.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>