staging: comedi: dt282x: remove unnecessary comment

The "Configuration options" are documented in the comedi driver comment
block. Remove the redundant comment before the drivers (*attach) function.

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>