<?php
function woo_dequeue_select2() {
if ( class_exists( 'woocommerce' ) ) {
wp_dequeue_style( 'select2' );
wp_deregister_style( 'select2' );
wp_dequeue_script( 'select2');
wp_deregister_script('select2');
}
}
add_action( 'wp_enqueue_scripts', 'woo_dequeue_select2', 100 );