Remove ConfigMap once applications are already installed

Description

Once Ingress/Prometheus/Runner are successfully installed we need to remove ConfigMap values-content-configuration since is no longer needed

Proposal

Remove ConfigMap once Cluster Applications are is installed

Links / references

https://gitlab.com/gitlab-org/gitlab-ce/issues/41053 https://gitlab.com/gitlab-org/gitlab-ce/issues/32831

cc @bikebilly @ayufan