Remove duplicated rel attribute
Remove duplicated rel attribute
GoogleCloudPlatform/appengine-guestbook-python,JonGal/appengine-ml-demo,JackConnor/portfolio,jerarl/gcp-appengine-python,JackConnor/portfolio,jerarl/gcp-appengine-python,JonGal/appengine-ml-demo,GoogleCloudPlatform/appengine-guestbook-python