hack: remove unused directory

hack/example-service-monitoring/deploy

-#!/usr/bin/env bash
-# exit immediately when a command fails
-set -e
-# only exit with zero if all commands of the pipeline exit successfully
-set -o pipefail
-# error on unset variables
-set -u
-
-kubectl apply -f examples/example-app

hack/example-service-monitoring/teardown

-#!/usr/bin/env bash
-# exit immediately when a command fails
-set -e
-# only exit with zero if all commands of the pipeline exit successfully
-set -o pipefail
-# error on unset variables
-set -u
-
-kubectl delete -f examples/example-app