Fix duplicate nav tree entry for Elasticsearch (#319)

Author: JakeSCahill

modules/ROOT/nav.adoc

@@ -246,7 +246,6 @@
 *** xref:components:outputs/drop.adoc[]
 *** xref:components:outputs/drop_on.adoc[]
 *** xref:components:outputs/dynamic.adoc[]
-*** xref:components:outputs/elasticsearch.adoc[]
 *** xref:components:outputs/elasticsearch_v8.adoc[]
 *** xref:components:outputs/fallback.adoc[]
 *** xref:components:outputs/file.adoc[]