This is not possible yet, but I’m already working on it and a new version with this feature will be released soon.
In case anyone is still looking to remove a field (until the feature is included)…
I was able to remove the Website/URL field by adding the following to functions.php
//Remove Comments Website Field
add_filter( 'genesis_comment_form_args', 'url_filtered' );
add_filter( 'comment_form_default_fields', 'url_filtered' );
function url_filtered( $fields ) {
if ( isset( $fields['url'] ) )
unset( $fields['url'] );
if ( isset( $fields['fields']['url'] ) )
unset( $fields['fields']['url'] );
return $fields;
}
Hiding the email or website field is now possible in the new version 0.6.2.