Server 2.4.0, app 2.11.1: ABRP forwarding removed from the server

The car sends live data to ABRP itself, and the car and the server go
over the same mobile connection: when the car cannot reach ABRP, it
cannot reach the server either, so the server's fallback bought
nothing. The forwarder, its ABRP_* settings and abrpSentUtc are gone;
the server only stores. The app stops sending abrpSentUtc (the server
ignores unknown fields, so 2.11.0 keeps working) and its texts no longer
promise a server fallback.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

k8s/secrets/secrets.example.yaml

@@ -26,11 +26,6 @@ stringData:
   # Approves a car on your phone when it pairs by QR code (at least 12 characters). Leave it
   # empty to switch pairing off; then only the INGEST_TOKEN above works.
   APPROVAL_PASSWORD: CHANGE-ME-at-least-12-characters
-  # Your ABRP credentials. Leave either empty to switch forwarding off. Keep them set even
-  # when the app sends to ABRP itself: the server then forwards only what the car could not.
-  ABRP_API_KEY: CHANGE-ME
-  ABRP_USER_TOKEN: CHANGE-ME
-  ABRP_MIN_INTERVAL_SECONDS: "5"
 ---
 apiVersion: v1
 kind: Secret