Update antora.yml

Author: glenn-rodgers-sf

antora.yml

@@ -2,7 +2,4 @@ name: api-manager
 title: API Manager
 version: 2.x
 nav:
-- modules/ROOT/nav.adoc
-asciidoc:
-  attributes:
-     page-notice-banner-message: This product is scheduled for <a href="https://help.mulesoft.com/s/article/MuleSoft-Product-Feature-Retirements">End of Life</a>. To integrate your micro services with Anypoint Platform, use Flex Gateway. For more information, see xref:gateway::flex-gateway-istio.adoc[].
+- modules/ROOT/nav.adoc