Удалите обязательную звездочку из поля сайта в форме комментария

<?php
// Do not delete these lines
if (!empty($_SERVER['SCRIPT_FILENAME']) && 'comments.php' == basename($_SERVER['SCRIPT_FILENAME']))
die ('Please do not load this page directly. Thanks!');

$comments_by_type = separate_comments($comments);
?>

<div id="comments" class="comments-wrap">

<?php if (post_password_required()): ?>
<p class="nopassword"><?php _e('This post is password protected. Enter the password to view any comments.', 'gummfw'); ?></p>
</div><!-- #comments -->

<?php
return;
endif;
?>

<?php if (have_comments() && comments_open()): ?>
<div class="bluebox-heading-wrap">
<h3 class="bluebox-heading"><?php comments_number(__('No Comments', 'gummfw'), __('One Comment', 'gummfw'), __('% Comments', 'gummfw'));?></h3>
</div>

<ol class="comment-list">
<?php
wp_list_comments(array(
'callback' => array(
GummRegistry::get('Controller', 'Comments'),
'view'
),
));
?>
</ol>

<?php if (get_comment_pages_count() > 1 && get_option('page_comments')): // Are there comments to navigate through? ?>
<div class="navigation">
<div class="nav-previous">
<?php previous_comments_link( __( '<span class="meta-nav">&larr;</span> Older Comments', 'gummfw' ) ); ?>
</div>
<div class="nav-next">
<?php next_comments_link( __( 'Newer Comments <span class="meta-nav">&rarr;</span>', 'gummfw' ) ); ?>
</div>
</div> <!-- .navigation -->
<?php endif; // check for comment navigation ?><?php elseif (!comments_open()): // this is displayed if comments are closed ?>

<?php else: ?>

<?php endif; ?>

</div>

<?php if ( comments_open() ) : ?>
<?php
add_filter('comment_form_default_fields', 'gummFilterFormDefaultFields');

echo '<div class="bluebox-heading-wrap"><h3 class="bluebox-heading">' . __('Leave a reply', 'gummfw') . '</h3></div>';
echo '<div class="bluebox-contact type-one">';

comment_form(array(
'title_reply' => '',
'id_submit' => 'button-submit',
'comment_notes_after' => '',
'comment_field' => '<textarea id="comment" name="comment" placeholder="' . __('Comment', 'gummfw') . '*" cols="45" rows="8" aria-required="true"></textarea>'
));
echo '</div>';
?>
<?php endif; // if you delete this the sky will fall on your head ?>

<?php
function gummFilterFormDefaultFields($fields) {
global $gummHtmlHelper;

$commenter = wp_get_current_commenter();
$req = get_option( 'require_name_email' );
$aria_req = ( $req ? " aria-required='true'" : '' );

$inputAtts = array(
'author' => array(
'id' => 'author',
'name' => 'author',
'type' => 'text',
'placeholder' => __('Name', 'gummfw'),
'value' => esc_attr($commenter['comment_author']),
),
'email' => array(
'id' => __('Email', 'gummfw'),
'name' => 'email',
'type' => 'text',
'placeholder' => __('Email', 'gummfw'),
'value' => esc_attr(  $commenter['comment_author_email']),
),
'url' => array(
'id' => 'url',
'name' => 'url',
'type' => 'text',
'placeholder' => __('Website', 'gummfw'),
'value' => esc_attr( $commenter['comment_author_url']),
),
);

foreach ($inputAtts as $type => &$atts) {
if ($req) {
$atts['placeholder'] .= '*';
$atts['aria-required'] = 'true';
}
}

$fields['author'] = '<input' . $gummHtmlHelper->_constructTagAttributes($inputAtts['author']) .' />';
$fields['email'] = '<input' . $gummHtmlHelper->_constructTagAttributes($inputAtts['email']) .' />';

// HERE YOU MAY WANT TO DO EITHER STRING REPLACEMENT OR USE REGEX:
$fields['url'] = '<input' . str_replace("*", "", $gummHtmlHelper->_constructTagAttributes($inputAtts['url'])) .' />';

return $fields;
}
?>