Remove helm docs

Signed-off-by: Johan Haals <johan.haals@gmail.com>

docs/deployment/helm.md

@@ -1,62 +0,0 @@
----
-id: helm
-title: Deploying with Helm
-description: How to deploy Backstage with Helm and Kubernetes
-sidebar_label: Helm
----
-
-An example Backstage app can be deployed in Kubernetes using the
-[Backstage Helm charts](https://github.com/backstage/backstage/tree/master/contrib/chart/backstage).
-
-First, choose a DNS name where Backstage will be hosted, and create a YAML file
-for your custom configuration.
-
-```yaml
-appConfig:
-  app:
-    baseUrl: https://backstage.mydomain.com
-    title: Backstage
-  backend:
-    baseUrl: https://backstage.mydomain.com
-    cors:
-      origin: https://backstage.mydomain.com
-  lighthouse:
-    baseUrl: https://backstage.mydomain.com/lighthouse-api
-  techdocs:
-    storageUrl: https://backstage.mydomain.com/api/techdocs/static/docs
-    requestUrl: https://backstage.mydomain.com/api/techdocs
-```
-
-Then use it to run:
-
-```bash
-git clone https://github.com/backstage/backstage.git
-cd backstage/contrib/chart/backstage
-helm dependency update
-helm install -f backstage-mydomain.yaml backstage .
-```
-
-This command will deploy the following pieces:
-
-- Backstage frontend
-- Backstage backend with scaffolder and auth plugins
-- (optional) a PostgreSQL instance
-- lighthouse plugin
-- ingress
-
-After a few minutes Backstage should be up and running in your cluster under the
-DNS specified earlier.
-
-Make sure to create the appropriate DNS entry in your infrastructure. To find
-the public IP address run:
-
-```bash
-$ kubectl get ingress
-NAME                HOSTS   ADDRESS         PORTS   AGE
-backstage-ingress   *       123.1.2.3       80      17m
-```
-
-> **NOTE**: this is not a production ready deployment.
-
-For more information on how to customize the deployment check the
-[README](https://github.com/backstage/backstage/tree/master/contrib/chart/backstage/README.md).