[DOCS] Clarified X-Pack features in trial (#20271)

docs/index.asciidoc

@@ -24,8 +24,6 @@ include::introduction.asciidoc[]
 
 include::setup.asciidoc[]
 
-include::setup/setup-xkb.asciidoc[]
-
 include::monitoring/monitoring-xkib.asciidoc[]
 
 include::security/securing-kibana.asciidoc[]

docs/management/managing-licenses.asciidoc

@@ -13,7 +13,13 @@ image::images/management-license.png[]
 The 30-day trial enables you to try out the full set of
 https://www.elastic.co/subscriptions[Platinum features],
 including security, machine learning, alerting, graph capabilities,
-and more.
+and more. For example, the following pages are added to the side navigation:
+
+* **Machine Learning**
+* **Graph**
+
+The **Management** page gains options related to configuring security, managing 
+{ls} pipelines, and using {watcher}. 
 
 At the end of the trial period, your license reverts
 to a Basic license. To continue using the Platinum features,

docs/setup/setup-xkb.asciidoc

@@ -1,27 +0,0 @@
-[role="xpack"]
-[[setup-xpack-kb]]
-== Set Up {xpack}
-
-{xpack} is an Elastic Stack extension that provides security, alerting,
-monitoring, reporting, machine learning, graph, and many other capabilities. By 
-default, when you install {kib}, {xpack} is installed.
-
-If you want to try all of the {xpack} features, you can 
-{xpack-ref}/license-management.html[start a 30-day trial]. At the end of the 
-trial period, you can purchase a subscription to keep using the full 
-functionality of the {xpack} components. For more information, see 
-https://www.elastic.co/subscriptions.
-
-{xpack} adds the following pages to the side navigation:
-
-* **APM**
-* **Machine Learning**
-* **Graph**
-* **Monitoring**
-
-The **Management** page gains options related to configuring security. The
-**Dev Tools** page gains a Search Profiler and a Grok Debugger. Where these and
-other {xpack} features are mentioned in this documentation, we've added an icon
-to clearly indicate that what you're reading pertains to features available only
-in {xpack}.
-