Remove link to Compatibility matrix (#896)

Co-authored-by: GitHub Actions <[email protected]>

Author: openshift-cherrypick-robot

modules/about/ref-supported-platforms.adoc

@@ -8,7 +8,3 @@
 
 You can find the supported platforms and life cycle dates for both current and past versions of {product} on the link:https://access.redhat.com/support/policy/updates/developerhub[Life Cycle page].
 
-[role="_additional-resources"]
-.Additional resources
-
-* link:https://redhat-developer.github.io/red-hat-developers-documentation-rhdh/pr-837/rel-notes-rhdh/#compatibility-matrix[{product} {product-version} Compatibility Matrix].