docs(): clean readme (#19)

## What type of PR is this?

* [ ] Feature
* [ ] BUG
* [ ] Alerts
* [ ] Improvement
* [ ] Documentation
* [ ] Test and CI

## Which issue(s) this PR related:

issue #
## What this PR does / why we need it:

Author: EZ4BRUCE

README.md

@@ -18,7 +18,6 @@ helm repo update
 ```
 helm search repo mo-ob/mo-ruler-stack --versions --devel
 helm search repo mo-ob/mo-ob-opensource --versions --devel
-helm search repo mo-ob/controlplane-resources-chart --versions --devel
 ```
 
 ### 设置环境变量