remove review widget on bottom post content

add_action(
    'init',
    function () {
        if ( ! is_admin() ) {
            remove_filter( 'the_content', array( JNews_Review_Frontend::getInstance(), 'review_content' ), 10 );
            remove_filter( 'the_content', array( JNews_Review_Frontend::getInstance(), 'review_content_widget' ), 10 );
        }
    }
);