update README

README.md

@@ -38,12 +38,10 @@ these settings, see `flask --help`.
 
 The service makes certain assumptions about the project being deployed:
 
-- Existence of Kubernetes manifests (in the directory `k8s-manifests/test/`) or
-  a Helm chart (in the directory `helm-charts/`).
+- Existence of a Helm chart in the directory `helm-charts/`.
 - A Gitlab webhook for _pipeline events_ is set, pointing to the address where the
   service can be reached 
-- In the case a Helm chart is used, the respective chart must be published in
-  the registry. See
+- The Helm chart must be published in the registry. See
   https://gitlab.switch.ch/memoriav/memobase-2020/utilities/ci-templates/-/tree/master/helm-chart
   for further instructions
 - The CI process has been successful either for a commit in the `master`