Hide duplicate shipping options in Woocommerce

functions.php

<?php 
// Paste everything below this line to your theme's functions.php file.

add_filter('woocommerce_package_rates', function($rates) {
    /** @var WC_Shipping_Rate[] $rates */
    
    /** @var WC_Shipping_Rate[] $uniqueRates */
    $uniqueRates = array();
    
    foreach ($rates as $key => $rate) {
        
        $unique = true;
        foreach ($uniqueRates as $uniqueRate) {
            if ($uniqueRate->get_label() == $rate->get_label() && $uniqueRate->cost == $rate->cost) {
                $unique = false;
                break;
            }    
        }
        
        if ($unique) {
            $uniqueRates[$key] = $rate;
        }
    }
    
    return $uniqueRates;
}, 10, 2);