Update app.yaml
Update app.yaml

Removing runtime param
JonGal/appengine-ml-demo,artificechicago/camp2016,JackConnor/portfolio,JonGal/appengine-ml-demo,GoogleCloudPlatform/appengine-guestbook-python,GoogleCloudPlatform/appengine-guestbook-python,jerarl/gcp-appengine-python,jerarl/gcp-appengine-python,JackConnor/portfolio,artificechicago/camp2016