unregister / enqueue Bookings styles

gistfile1.php

<?php
function woo_dequeue_booking_styles() {
    wp_dequeue_style( 'wc-bookings-styles' );
    wp_deregister_style( 'wc-bookings-styles' );
}
add_action( 'wp_print_styles', 'woo_dequeue_booking_styles', 100 );