Remove cockroach demo telemetry message (#19094)

Fixes:

- DOC-11646
- DOC-11657
- DOC-11658
- DOC-11659
- DOC-11660
- DOC-11661

Summary:

- Update `cockroach demo` docs to remove the banner output about
  disabling telemetry

- This output was removed in
  cockroachdb/cockroach#133284 and then
  backported

src/current/v23.1/cockroach-demo.md

@@ -149,11 +149,6 @@ When the SQL shell connects to the demo cluster at startup, it prints a welcome
 #
 # You are connected to a temporary, in-memory CockroachDB cluster of 9 nodes.
 #
-# This demo session will attempt to enable Enterprise features
-# by acquiring a temporary license from Cockroach Labs in the background.
-# To disable this behavior, set the environment variable
-# COCKROACH_SKIP_ENABLING_DIAGNOSTIC_REPORTING=true.
-#
 # Beginning initialization of the movr dataset, please wait...
 #
 # Waiting for license acquisition to complete...

src/current/v23.2/cockroach-demo.md

@@ -149,11 +149,6 @@ When the SQL shell connects to the demo cluster at startup, it prints a welcome
 #
 # You are connected to a temporary, in-memory CockroachDB cluster of 9 nodes.
 #
-# This demo session will attempt to enable Enterprise features
-# by acquiring a temporary license from Cockroach Labs in the background.
-# To disable this behavior, set the environment variable
-# COCKROACH_SKIP_ENABLING_DIAGNOSTIC_REPORTING=true.
-#
 # Beginning initialization of the movr dataset, please wait...
 #
 # Waiting for license acquisition to complete...

src/current/v24.1/cockroach-demo.md

@@ -149,11 +149,6 @@ When the SQL shell connects to the demo cluster at startup, it prints a welcome
 #
 # You are connected to a temporary, in-memory CockroachDB cluster of 9 nodes.
 #
-# This demo session will attempt to enable Enterprise features
-# by acquiring a temporary license from Cockroach Labs in the background.
-# To disable this behavior, set the environment variable
-# COCKROACH_SKIP_ENABLING_DIAGNOSTIC_REPORTING=true.
-#
 # Beginning initialization of the movr dataset, please wait...
 #
 # Waiting for license acquisition to complete...

src/current/v24.2/cockroach-demo.md

@@ -149,11 +149,6 @@ When the SQL shell connects to the demo cluster at startup, it prints a welcome
 #
 # You are connected to a temporary, in-memory CockroachDB cluster of 9 nodes.
 #
-# This demo session will attempt to enable Enterprise features
-# by acquiring a temporary license from Cockroach Labs in the background.
-# To disable this behavior, set the environment variable
-# COCKROACH_SKIP_ENABLING_DIAGNOSTIC_REPORTING=true.
-#
 # Beginning initialization of the movr dataset, please wait...
 #
 # Waiting for license acquisition to complete...

src/current/v24.3/cockroach-demo.md

@@ -149,11 +149,6 @@ When the SQL shell connects to the demo cluster at startup, it prints a welcome
 #
 # You are connected to a temporary, in-memory CockroachDB cluster of 9 nodes.
 #
-# This demo session will attempt to enable Enterprise features
-# by acquiring a temporary license from Cockroach Labs in the background.
-# To disable this behavior, set the environment variable
-# COCKROACH_SKIP_ENABLING_DIAGNOSTIC_REPORTING=true.
-#
 # Beginning initialization of the movr dataset, please wait...
 #
 # Waiting for license acquisition to complete...