WC_Tax::_delete_tax_rate PHP Method

    public static function _delete_tax_rate($tax_rate_id)
    {
        global $wpdb;
        $wpdb->query($wpdb->prepare("DELETE FROM {$wpdb->prefix}woocommerce_tax_rate_locations WHERE tax_rate_id = %d;", $tax_rate_id));
        $wpdb->query($wpdb->prepare("DELETE FROM {$wpdb->prefix}woocommerce_tax_rates WHERE tax_rate_id = %d;", $tax_rate_id));
        WC_Cache_Helper::incr_cache_prefix('taxes');
        do_action('woocommerce_tax_rate_deleted', $tax_rate_id);
    }

 public function install_standard_rates()
 {
     //  delete previous inserted standard rates
     $tax_rates = $this->get_tax_rates();
     foreach ($tax_rates as $tax_rate) {
         $tax_rate_name = sprintf("EU VAT (%s)", $tax_rate->tax_rate_country);
         if (0 == strpos($tax_rate->tax_rate_name, $tax_rate_name)) {
             WC_Tax::_delete_tax_rate($tax_rate->tax_rate_id);
         }
     }
     foreach ($this->tax_rates_data as $key => $value) {
         $tax_rate = array('tax_rate_country' => $key, 'tax_rate_state' => '*', 'tax_rate' => $value["standard_rate"], 'tax_rate_name' => sprintf("EU VAT (%s) %s%%", $key, $value["standard_rate"]), 'tax_rate_priority' => 1, 'tax_rate_compound' => 1, 'tax_rate_shipping' => 1, 'tax_rate_class' => '');
         $tax_rate_id = WC_Tax::_insert_tax_rate($tax_rate);
         WC_Tax::_update_tax_rate_postcodes($tax_rate_id, wc_clean('*'));
         WC_Tax::_update_tax_rate_cities($tax_rate_id, wc_clean('*'));
     }
 }