remove 25 remnant

Author: JPryce-Aklundh

modules/ROOT/pages/queries/index.adoc

@@ -2,7 +2,7 @@
 :description: This page is an overview of the queries section in the Cypher Manual.
 
 This section provides a brief overview of the core concepts of a Cypher query (nodes, relationships, and paths), and examples of how to query a Neo4j graph database.
-It also discusses how to compose combined queries using `UNION` and conditional queries using `WHEN`.
+It also discusses how to compose combined queries using `UNION`.
 
 * xref:queries/concepts.adoc[]
 * xref:queries/basic.adoc[]