remove old Holodeck doc links

Author: dhruv-tyagi-broadcom

docs/index.md

@@ -12,7 +12,6 @@ VMware Private Cloud. Holodeck is **only** to be used for a testing and training
 wanting to gain a better understanding of how VCF functions across many use cases and capabilities. Currently, there are
 two different versions of the Holodeck supported - Holodeck 5.2x supporting VCF 5.2.x and Holodeck 9.0 supporting VCF 5.2.x and VCF 9.x. 
 
-This documentation solely focuses on Holodeck 9.0. If you need details on the previous version of Holodeck, please refer to this <a href="https://www.vmware.com/docs/vmw-vcf-holodeck-v52-setup" target="_blank">documentation</a>
 
 <figure markdown="span">
     <img src="images/HoloDeck-Overview.png">

docs/release_notes.md

@@ -596,12 +596,6 @@ This page documents the key features, enhancements, and capabilities available i
 
 ---
 
-## Previous Versions
-
-Looking for Holodeck 5.2 setup guidance? Refer to the [Holodeck 5.2 documentation](https://www.vmware.com/docs/vmw-vcf-holodeck-v52-setup).
-
----
-
 ## Reporting Issues
 
 To raise issues, feature requests, or provide feedback, please visit the [Holodeck GitHub repository](https://github.com/vmware/Holodeck/issues).