Telemetry Probe Expiry

[telemetr...@mozilla.com]

The following Firefox probes will expire in the next major Firefox nightly release: version 89 [1].

```
devtools.accessibility.tabbing_order_activated
```

The following bugs were filed for the above probes:
https://bugzilla.mozilla.org/show_bug.cgi?id=1694849


What to do about this:
1. If one, some, or all of the metrics are no longer needed, please remove them from their definitions files (Histograms.json, Scalars.yaml, Events.yaml).
2. If one, some, or all of the metrics are still required, please submit a Data Collection Review [2] and patch to extend their expiry. There is a shorter form for data collection renewal [3].

If you have any problems, please ask for help on the #data-help Slack channel or the #telemetry Matrix room at https://chat.mozilla.org/#/room/#telemetry:mozilla.org. We'll give you a hand.

Your Friendly, Neighborhood Telemetry Team

[1] https://wiki.mozilla.org/Release_Management/Calendar
[2] https://wiki.mozilla.org/Firefox/Data_Collection
[3] https://github.com/mozilla/data-review/blob/master/renewal_request.md

This is an automated message sent from probe-scraper. See https://github.com/mozilla/probe-scraper for details.

[telemetr...@mozilla.com]

[telemetr...@mozilla.com]

[telemetr...@mozilla.com]