Wp Dequeue Styles and Scripts in functions child theme

functions.php

//dequeue css from plugins
add_action('wp_print_styles', 'mytheme_dequeue_css_from_plugins', 100);
function mytheme_dequeue_css_from_plugins()  {
	wp_dequeue_style( '' ); 
}

add_action('wp_print_scripts','mytheme_dequeue_js_from_plugins');
function mytheme_dequeue_js_from_plugins() {
   wp_dequeue_script( '' );
}