docs: remove servicebuilder from homepage sample (#3038)
docs: remove servicebuilder from homepage sample (#3038)


chingor13/google-cloud-php,googleapis/google-cloud-php,chingor13/google-cloud-php,googleapis/google-cloud-php,chingor13/google-cloud-php,jdpedrie/google-cloud-php,jdpedrie/google-cloud-php,jdpedrie/google-cloud-php,googleapis/google-cloud-php