Update description of telemetry events in docs (#694)

I know this is our outdated docs page, but it is still linked from a few
places and I paused when I saw this

<!-- Explain the changes introduced in your PR -->

## Pull Request approval

Although pull request approval is not enforced for this repository in
order to reduce friction, merging without a review will generate a
ticket for the docs team to review your changes. So if possible, have
your pull request approved before merging.

Author: dadlerj

docs/admin/telemetry/index.mdx

@@ -12,10 +12,7 @@ If you have any questions about telemetry collection, please reach out to your S
 
 <span class="badge badge-note">Sourcegraph 5.2.1+</span>
 
-> WARNING: This section refers to a new system for collecting telemetry introduced in Sourcegraph 5.2.1, and only applies to telemetry that has been migrated to use this new system.
-> Certain Sourcegraph components - namely [Cody editor extensions](/cody/) - will continue to use a legacy mechanism for reporting telemetry directly to Sourcegraph.com until the migration is complete.
-
-Sourcegraph instances 5.2.1 and later collect telemetry events to understand usage patterns and help improve the product. Telemetry events can be generated when certain user actions occur, like opening files or performing searches. This data helps us provide the highest level of support to Sourcegraph's customers.
+Sourcegraph instances 5.2.1 and later collect telemetry events from all Sourcegraph end-user client applications to understand usage patterns and help improve the product. Telemetry events can be generated when certain user actions occur, like opening files or performing searches. This data helps us provide the highest level of support to Sourcegraph's customers.
 
 Sensitive data/PII exfiltration, intentional or not, is a significant concern to Sourcegraph that we take very seriously.
 Some of the measures we take to ensure privacy and data security are: