ci: remove the daily Release downloads workflow

docs/TELEMETRY.md

@@ -151,22 +151,6 @@ judge at all). `codeaf pool status` says how many rows wait to leave for the
 pool; this page describes both streams, so "what is collected" is answered
 for everything the binary sends.
 
-## Download counts
-
-The download numbers this repository reports come from public GitHub release
-data: the GitHub API publishes a cumulative download count for every asset on
-a release, and a daily scheduled workflow reads those counts and sends one
-event per binary asset to PostHog (`codeaf:release_downloads`). No code in
-the binary is involved, nothing is collected from the person downloading, and
-the only facts in the event are the release tag, the asset's platform, and
-the count GitHub already shows on the release page. Sidecar files such as
-`checksums.txt` are not counted. The workflow lives in
-`.github/workflows/release-downloads.yml`; the script behind it is
-`scripts/release_downloads.py`, and running it with `--dry-run` prints the
-batch it would send.
-
-The release-download workflow fails visibly when its production PostHog key or GitHub token is missing; dry-run still works without a PostHog key.
-
 ## Estimates and recovered receipts
 
 See [Model usage accounting](model-usage-accounting.md) for the estimator,

docs/changes/unreleased/2193-release-downloads-workflow.md

@@ -0,0 +1,11 @@
+---
+kind: removed
+title: The daily Release downloads workflow and its PostHog script are gone
+pr: 2193
+surface: [build, docs]
+invalidates:
+  - "A daily workflow, .github/workflows/release-downloads.yml, sent GitHub release download counts to PostHog as codeaf:release_downloads; that workflow and scripts/release_downloads.py no longer exist and nothing reports download counts."
+---
+
+It failed on every run because its PostHog project key was never set, and the
+counts are already visible on the GitHub release pages.