[README] Delete obsolete reference to try pipeline (bank-vaults#1255)

README.md

@@ -59,12 +59,7 @@ We use Vault across our large Kubernetes deployments and all the projects were `
 
 >We take bank-vaults' security and our users' trust very seriously. If you believe you have found a security issue in bank-vaults, please contact us at [email protected].
 
-Bank-Vaults is a core part of [Banzai Cloud Pipeline](https://banzaicloud.com/), a Cloud Native application and devops platform that natively supports multi- and hybrid-cloud deployments. Check out the developer beta:
-<p align="center">
-  <a href="https://beta.banzaicloud.io">
-  <img src="https://camo.githubusercontent.com/a487fb3128bcd1ef9fc1bf97ead8d6d6a442049a/68747470733a2f2f62616e7a6169636c6f75642e636f6d2f696d672f7472795f706970656c696e655f627574746f6e2e737667">
-  </a>
-</p>
+Bank-Vaults is a core part of [Banzai Cloud Pipeline](https://github.com/banzaicloud/pipeline), a Cloud Native application and devops platform that natively supports multi- and hybrid-cloud deployments.
 
 
 ## Installing