Hi @georgio-1

/**
 * Neutralize the built-in rating system
 */
add_filter( 'wp_idea_stream_is_rating_disabled', '__return_true' );

You can put the above code inside a wp-idea-stream-custom.php file at the root of your /wp-content/plugins directory or if you are using a “mu-plugins” file, just add it there 🙂

There other snippets available here: https://gist.github.com/imath/672f3b81009a0f30c7b5#file-wp-idea-stream-custom-php