Favicon Handling

Dear Bosses,
I have my favicon settings from the redux framework. And I have the following code in functions.php.

/**
* Fevicon
*/
function r_render_favicon() {
  global $r_redux_option;
  $r_favicon = $r_redux_option['r_favicon'];
  if ( !function_exists('has_site_icon') || !has_site_icon() ){
if (!empty($r_favicon)) :
  ?>
  <link rel="icon" type="image/x-icon" href="<?php echo esc_url($r_favicon['url']); ?>">
<?php
endif;
  }
}

But NS Theme Check plugin show the following error:
Code for favicon found. Favicons are handled by the “Site Icon” setting in the customizer since version 4.3.

Is it an issue for themeforest approval?

Thanks much for reading.

NS Theme Check plugin: https://github.com/WPTRT/theme-sniffer