we are theme developers and we already use select2 (http://select2.github.io/) script for SELECT boxes in HTML in our wordpress theme. New WooCommerce 2.3.x that just relase
I found a solution:
add_action( 'wp_enqueue_scripts', 'mgt_dequeue_stylesandscripts', 100 );
function mgt_dequeue_stylesandscripts() {
if ( class_exists( 'woocommerce' ) ) {
wp_dequeue_style( 'select2' );
wp_deregister_style( 'select2' );
wp_dequeue_script( 'select2');
wp_deregister_script('select2');
}
}