我不知道您为什么要删除aria-required 属性它是W3草案中的一个表单属性，处理与应用程序和残疾用户一起工作的可访问性。

无论如何，您可以通过过滤comment_form_default_fields 和comment_form_field_comment. 下面的示例可以用作插件或主题的functions.php 文件，并将删除aria-required 属性

/* Attach the custom_comment_form_fields() function to the comment_form_default_fields hook. */
add_filter( \'comment_form_default_fields\',  \'custom_comment_form_fields\' );

/* Attach the custom_comment_form_field_comment() function to the comment_form_field_comment hook. */
add_filter( \'comment_form_field_comment\',   \'custom_comment_form_field_comment\' );

/** 
 * Remove the aria-reuqired from name and email comment fields. 
 */
function custom_comment_form_fields() {

    /* Get current commenter. */
    $commenter = wp_get_current_commenter();

    /* Check if name and email fields are required. */
    $req = get_option( \'require_name_email\' );

    /* Remove the aria-required attribute. */
    $fields =  array(
        \'author\' => \'<p class="comment-form-author">\' . \'<label for="author">\' . __( \'Name\' ) . \'</label> \' . ( $req ? \'<span class="required">*</span>\' : \'\' ) .
                    \'<input id="author" name="author" type="text" value="\' . esc_attr( $commenter[\'comment_author\'] ) . \'" size="30" /></p>\',

        \'email\'  => \'<p class="comment-form-email"><label for="email">\' . __( \'Email\' ) . \'</label> \' . ( $req ? \'<span class="required">*</span>\' : \'\' ) .
                    \'<input id="email" name="email" type="text" value="\' . esc_attr(  $commenter[\'comment_author_email\'] ) . \'" size="30" /></p>\',

        \'url\'    => \'<p class="comment-form-url"><label for="url">\' . __( \'Website\' ) . \'</label>\' .
                    \'<input id="url" name="url" type="text" value="\' . esc_attr( $commenter[\'comment_author_url\'] ) . \'" size="30" /></p>\'

    );
    return $fields;

}

/** 
 * Remove the aria-reuqired from comment textarea field. 
 */
function custom_comment_form_field_comment() {
    /* Comment text area. */
    $textarea = \'<p class="comment-form-comment"><label for="comment">\' . _x( \'Comment\', \'noun\' ) . \'</label><textarea id="comment" name="comment" cols="45" rows="8"></textarea></p>\';

    return $textarea;
}