WooCommerce 2.6 - Hiding paid shipping when free shipping is triggered by reaching specific amount

I recently updated to WooCommerce 2.6 on my shop and they have updated their shipping system. Before I used this to hide the paid shipping option when an specific order value was reached and free shipping was triggered:

/**
 * woocommerce_package_rates is a 2.1+ hook
 */
add_filter( 'woocommerce_package_rates', 'hide_shipping_when_free_is_available', 10, 2 );

/**
 * Hide shipping rates when free shipping is available
 *
 * @param array $rates Array of rates found for the package
 * @param array $package The package array/object being shipped
 * @return array of modified rates
 */
function hide_shipping_when_free_is_available( $rates, $package ) {

    // Only modify rates if free_shipping is present
    if ( isset( $rates['free_shipping'] ) ) {

        // To unset a single rate/method, do the following. This example unsets flat_rate shipping
        unset( $rates['flat_rate'] );

        // To unset all methods except for free_shipping, do the following
        $free_shipping          = $rates['free_shipping'];
        $rates                  = array();
        $rates['free_shipping'] = $free_shipping;
    }

    return $rates;
}

Although this does not work anymore. I need a new fix and im not really into coding.

Does anyone have a solution to this?

The above solution was from this site:
Hide other shipping methods when FREE SHIPPING is available

I'm guessing that some parameters have changed since they updated the shipping methods.

I hope some one out there knows how to fix this.

via Chebli Mohamed