Remove title attribute of in wp_list_categories

You can remove it completely by adding this snippet to the functions.php of your wordpress theme will remove the title=”” attribute from the anchor tag when using wp_list_categories().

function replace_wps_title_att($output) {
	$output = preg_replace('<code>title="(.+)"</code>', '', $output);
        return $output;
}
add_action('wp_list_categories','replace_wps_title_att');

Source: https://wpsnipp.com/index.php/cat/remove-title-attribute-from-wp_list_categories/