staging: comedi: cb_das16_cs: remove skel driver cut-and-paste comments

There are a number of comments in this driver that are cut-and-paste
from the skel driver. They are not needed in "real" drivers.

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