function _deregister_styles()
{
if (!is_admin()) :
wp_dequeue_style('wp-block-library');
wp_deregister_style('wp-block-library');
wp_dequeue_style('wp-block-library-theme');
endif;
}
function _deregister_scripts()
{
if (!is_admin()) :
wp_dequeue_script('wp-embed');
wp_deregister_script('wp-embed');
endif;
}
add_action('wp_print_styles', '_deregister_styles', 100);
add_action('wp_print_scripts', '_deregister_scripts', 100);