chore(buzz): drop the bundled postgres and redis subcharts

Postgres comes from the CloudNativePG operator and Redis from the Redis
operator, so upstream's evaluation subcharts never render here. They were
still vendored: ~11.9k lines carrying their own images, CRDs and schemas
into our tree and our SBOM for nothing.

Removing them takes the evaluation profile with it, so postgresql.enabled
and redis.enabled can no longer be turned on. That is the intent, and the
README says so along with the caveat that a chart bump re-vendors them.

Rendered output is byte-identical to before the removal.

Author: ashish1099

argocd-helm-charts/buzz/README.md

@@ -8,6 +8,11 @@ This wrapper runs the upstream chart in its production profile and supplies the
 KubeAid way: PostgreSQL from the CloudNativePG operator via `kubeaid-addons`, Redis from the Redis
 operator, and object storage from an external S3-compatible endpoint.
 
+Upstream's bundled `postgres` and `redis` subcharts are stripped from the vendored copy, so the
+evaluation profile is gone and `buzz.postgresql.enabled` / `buzz.redis.enabled` have to stay false.
+Re-vendoring with `bin/manage-helm-chart.sh --update-helm-chart buzz` pulls them back in, so the
+removal has to be repeated on every chart bump.
+
 ## Prerequisites
 
 - `cloudnative-pg` and `redis-operator` installed on the cluster.

argocd-helm-charts/buzz/charts/buzz/Chart.lock

@@ -5,16 +5,6 @@ annotations:
   artifacthub.io/license: Apache-2.0
 apiVersion: v2
 appVersion: 0.1.0
-dependencies:
-- alias: postgresql
-  condition: postgresql.enabled
-  name: postgres
-  repository: oci://registry-1.docker.io/cloudpirates
-  version: 0.19.x
-- condition: redis.enabled
-  name: redis
-  repository: oci://registry-1.docker.io/cloudpirates
-  version: 0.30.x
 description: 'Buzz — a Nostr-based messaging platform for human–agent collaboration.  A
   single relay binary serving WebSocket + REST + web UI, backed by PostgreSQL and
   Redis. Configurable for single-node evaluation (subcharts on) and HA production