calling `comedi_auto_attach()` as this check is done by
`comedi_auto_config()` itself (actually by
`comedi_auto_config_wrapper()`).  Remove the unnecessary checks.

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