WooCommerce: Hide the undesired service for the required states

functions.php

	add_filter('woocommerce_package_rates', 'wf_hide_undesired_service_for_required_states', 10, 2);
	
	function wf_hide_undesired_service_for_required_states($rates, $package)
	{
		$exclude = array(
			'international_delivery' => array(
				'CA'
			) ,
			'wf_fedex_woocommerce_shipping:FEDEX_GROUND' => array(
				'FL'
			)
		);
		if (is_array($exclude)) {
			foreach($exclude as $shipping_method => $excluded_states) {
				if (in_array(WC()->customer->shipping_state, $excluded_states)) {
					unset($rates[$shipping_method]);
				}
			}
		}
	
		return $rates;
	}