[cloudcost-exporter] Move chart source to grafana/cloudcost-exporter (#4134)

Remove chart source files and replace with a pointer README following
the same pattern as charts/loki. The chart is now maintained at
https://github.com/grafana/cloudcost-exporter/tree/main/charts/cloudcost-exporter.

Closes grafana/cloudcost-exporter#743

Signed-off-by: nikimanoledaki <niki.manoledaki@grafana.com>

Author: nikimanoledaki

charts/cloudcost-exporter/.helmignore

@@ -1,65 +1,9 @@
-# cloudcost-exporter
+# cloudcost-exporter Helm chart
 
-Cloud Cost Exporter exports cloud provider agnostic cost metrics to Prometheus.
+The `cloudcost-exporter` chart is the recommended Helm chart to install Grafana Cloud Cost Exporter. It is maintained by Grafana Labs.
 
-![Version: 1.0.6](https://img.shields.io/badge/Version-1.0.6-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.10.0](https://img.shields.io/badge/AppVersion-0.10.0-informational?style=flat-square)
+The `cloudcost-exporter` Helm chart at [https://grafana.github.io/helm-charts](https://grafana.github.io/helm-charts) is a publication of the source code at [**grafana/cloudcost-exporter**](https://github.com/grafana/cloudcost-exporter/tree/main/charts/cloudcost-exporter).
 
-## Installing the Chart
+Please file any issues with this Helm chart in the [Grafana Cloud Cost Exporter](https://github.com/grafana/cloudcost-exporter) repository.
 
-To install the chart with the release name `my-release`:
-
-```console
-helm repo add grafana https://grafana.github.io/helm-charts
-helm repo update
-helm install my-release grafana/cloudcost-exporter
-```
-
-## Configuration per cloud service provider (CSP)
-
-The Helm chart can be used with the general `values.yaml` manifest.
-The project includes CSP-specific configuration (e.g. `values.<csp>.yaml`) that can be used in combination with the general values.
-The deployment itself will depend on each deployment pipeline and tooling available.
-
-Documentation per CSP will vary (especially when it comes to authentication). Below are links to docs to help with this:
-* [AWS](https://github.com/grafana/cloudcost-exporter/tree/main/docs/deploying/aws)
-
-## Values
-
-| Key | Type | Default | Description |
-|-----|------|---------|-------------|
-| affinity | object | `{}` | Node/pod affinities |
-| containerArgs | list | `[]` | Container arguments, usually to configure the deployment per CSP |
-| fullnameOverride | string | `""` | Override the full name of the chart and release |
-| image.pullPolicy | string | `"IfNotPresent"` | Pull policy for the image |
-| image.repository | string | `"grafana/cloudcost-exporter"` | Image to use for deploying |
-| image.tag | string | `""` | Overrides the image tag whose default is the chart appVersion. |
-| imagePullSecrets | list | `[]` | Secrets to use for pulling the image |
-| minReadySeconds | int | `10` | Seconds a pod should be ready to be considered available |
-| nameOverride | string | `""` | Override the name of the release |
-| nodeSelector | object | `{}` | Node selector |
-| podAnnotations | object | `{}` | Annotations to add to the pod |
-| portName | string | `"http"` | Container port name |
-| replicaCount | int | `1` | Number of replicas |
-| resources.limits.cpu | string | `"2"` | CPU limit |
-| resources.limits.memory | string | `"2Gi"` | Memory limit |
-| resources.requests.cpu | string | `"1"` | CPU request |
-| resources.requests.memory | string | `"1Gi"` | Memory request |
-| revisionHistoryLimit | int | `10` | Number of old versions to retain to allow rollback |
-| securityContext.fsGroup | int | `10001` | Filesystem group to associate for each pod |
-| service.port | int | `8080` | Service port |
-| service.protocol | string | `"TCP"` | Service protocol |
-| service.type | string | `"ClusterIP"` | Service type |
-| serviceAccount.annotations | object | `{}` | Annotations to add to the service account |
-| serviceAccount.create | bool | `true` | Specifies whether a service account should be created |
-| serviceAccount.name | string | `""` | The name of the service account to use. If not set and create is true, a name is generated using the fullname template |
-| tolerations | list | `[]` | List of node taints to tolerate |
-| volumeMounts | list | `[]` | List of volume mounts |
-| volumes | list | `[]` | List of volumes |
-
-----------------------------------------------
-Autogenerated from chart metadata using [helm-docs v1.8.1](https://github.com/norwoodj/helm-docs/releases/v1.8.1)
-
-## Contribute
-
-Check out the [docs](https://github.com/grafana/cloudcost-exporter/tree/main//docs/contribute/releases.md#helm-chart)
-for more information on how to contribute to the `cloudcost-explorer`'s Helm chart.
+The source code for this chart was removed from this repository after commit [8ba262ec](https://github.com/grafana/helm-charts/commit/8ba262ec) and moved to <https://github.com/grafana/cloudcost-exporter/tree/main/charts/cloudcost-exporter>.