staging: comedi: adl_pci9118: remove PCI9118_EXTDEBUG and DPRINTK

These macros enable a bunch of function trace messages. These should
not be in the final driver.

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