remove-luna-for-ragstack-support (#589)

Author: mendonk

docs/modules/ROOT/nav.adoc

@@ -36,9 +36,6 @@
 * xref:intro-to-rag:evaluating.adoc[]
 * xref:intro-to-rag:advanced-rag.adoc[]
 
-.Luna for RAGStack
-* xref:ROOT:luna-for-ragstack.adoc[]
-
 .RAGStack Examples
 * xref:examples:index.adoc[]
 * xref:examples:prerequisites.adoc[]