Remove non-functional dependabot config

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.github/dependabot.yml

@@ -1,17 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
-version: 2
-updates:
-  # Enable version updates for Helm
-  - package-ecosystem: "helm"
-    # Look for a `Chart.yaml` in the `root` directory
-    directory: '/homeassistant'
-    # Check for updates once a week
-    schedule:
-      interval: "daily"
-  - package-ecosystem: "docker"
-    directory: '/homeassistant'
-    schedule:
-      interval: "daily"

README.md

@@ -61,4 +61,4 @@ helm template <chart-name> --set ingress.domain=example.com --set ingress.cluste
 - Ingress assumes ingress-nginx (`ingressClassName: nginx`) and cert-manager: `ingress.clusterIssuer` and `ingress.domain` are required values; the TLS secret is named `tls-<release>-<chart>-ingress`.
 - `env` entries in `values.yaml` are rendered through `tpl`, so values may contain Helm templating; `value`, `secretKeyRef` and `configMapKeyRef` forms are supported.
 - Hardened defaults: `automountServiceAccountToken: false`, non-root user, `readOnlyRootFilesystem: true`, all capabilities dropped, probes and resource requests/limits always set.
-- Charts have no dependencies (`charts/` directories are empty); Dependabot is configured only for the `homeassistant` chart (helm + docker ecosystems, daily).
+- Charts have no dependencies (`charts/` directories are empty).