Laravel 5.1 Validate input only on production

so I'm adding Google's recaptcha to my Laravel project. I'm using the basic Auth that comes with Laravel 5.1. I'm using this class for the recaptcha http://ift.tt/1pUdpqK

In my AuthController.php I have this function which is validating my current form. I would however like to add a check for the racaptcha but only when the server is production....

/**
 * Get a validator for an incoming registration request.
 *
 * @param  array $data
 *
 * @return \Illuminate\Contracts\Validation\Validator
 */
protected function validator(array $data)
{
    return Validator::make($data, [
        'name'                 => 'required|max:255',
        'email'                => 'required|email|max:255|unique:users',
        'password'             => 'required|confirmed|min:6',
        'g-recaptcha-response' => 'required|recaptcha',
    ]);
}

The part of the validator that I only want on product is

'g-recaptcha-response' => 'required|recaptcha',

What would be the easiest way to achieve this?

via Chebli Mohamed