Bug 1722513 - Mark Ecosystem Telemetry as obsolete r=janerik DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D120973

toolkit/components/telemetry/docs/data/index.rst

@@ -15,6 +15,5 @@ Data documentation
    anonymous-ping
    first-shutdown-ping
    *-ping
-   ecosystem-telemetry
 
 The `mozilla-pipeline-schemas repository <https://github.com/mozilla-services/mozilla-pipeline-schemas/>`_ contains schemas for some of the pings.

toolkit/components/telemetry/docs/obsolete/ecosystem-telemetry.rst

@@ -1,5 +1,5 @@
-Ecosystem Telemetry
-===================
+Ecosystem Telemetry (obsolete)
+==============================
 
 This module transmits Ecosystem Telemetry from Firefox Desktop.
 It is only sent for Firefox Account users, using a single ping type