staging: comedi: me4000: remove the noise when probing the card

The me4000_probe() function has a bunch of error messages that
are displayed when various parts of the probe fail. These are
just added noise. Remove them.

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>