lib/AdobeMarketingCloud/Client.php
public function delete($route, array $parameters = array(), $requestOptions = array())
    {
        return $this->getHttpClient()->delete($route, $parameters, $requestOptions);
    }
public function delete($route, array $parameters = array(), $requestOptions = array())
    {
        return $this->getHttpClient()->delete($route, $parameters, $requestOptions);
    }
Call any route, DELETE method
Ex: $api->delete('repos/show/my-username', array('email' => 'my-new-email@provider.org'))

@param   string  $route            the AdobeMarketingCloud route
@param   array   $parameters       DELETE parameters
@param   array   $requestOptions   reconfigure the request
@return  array                     data returned