Extension::uninstall

public function uninstall() : ?RetargetingResponse
{
	if ($setup = FacebookSetup::load())
	{
		return $this->getRequest()->send([
			'methodName' => $this->getMethodName('installs.delete'),
			'parameters' => [
				'fbe_external_business_id' => $setup->get(FacebookSetup::BUSINESS_ID)
			]
		]);
	}
	return null;
}