Remove obsolete un/deploy scripts for the "hello" example/test.

examples/hello/deploy.sh

-#! /bin/bash -ex
-
-kubectl create -f cafe.yaml
-
-kubectl create -f cafe-ingress.yaml

examples/hello/deploy_helm.sh

-#! /bin/bash -ex
-
-MYDIR=$(dirname ${BASH_SOURCE[0]})
-
-helm install viking-ingress ${MYDIR}/../../charts/viking-test-app \
-     --values values.yaml

examples/hello/undeploy.sh

-#! /bin/bash -ex
-
-MYDIR=$(dirname ${BASH_SOURCE[0]})
-source ${MYDIR}/../../test/utils.sh
-
-kubectl delete -f cafe-ingress.yaml
-
-kubectl delete -f cafe.yaml
-
-echo "Waiting until varnish-ingress Pods are not configured for Ingress"
-wait_until_not_configured app=varnish-ingress

examples/hello/undeploy_helm.sh

-#! /bin/bash -ex
-
-MYDIR=$(dirname ${BASH_SOURCE[0]})
-source ${MYDIR}/../../test/utils.sh
-
-helm uninstall viking-ingress
-
-echo "Waiting until varnish-ingress Pods are not configured for Ingress"
-wait_until_not_configured app=varnish-ingress