remove: Docs (impress) and People (desk) from La Suite

Collabora stays (Drive needs it for WOPI document editing).
Removed: Helm charts, values, nginx configs, patches, OIDC clients,
Vault secrets, S3 buckets, Pingora routes, Kratos return URLs,
overlay image overrides and resource patches, local-up.sh restarts.

overlays/local/kustomization.yaml

@@ -31,20 +31,6 @@ images:
   # amd64-only La Suite images — mirrored to our Gitea registry with a patched
   # OCI index that adds an arm64 alias so Rosetta can run them on the Lima VM.
   # DOMAIN_SUFFIX is substituted by local-up.py at deploy time (sed replacement).
-  - name: lasuite/people-backend
-    newName: src.DOMAIN_SUFFIX/studio/people-backend
-  - name: lasuite/people-frontend
-    newName: src.DOMAIN_SUFFIX/studio/people-frontend
-    newTag: latest
-
-  # amd64-only impress (Docs) images — same mirror pattern.
-  - name: lasuite/impress-backend
-    newName: src.DOMAIN_SUFFIX/studio/impress-backend
-  - name: lasuite/impress-frontend
-    newName: src.DOMAIN_SUFFIX/studio/impress-frontend
-  - name: lasuite/impress-y-provider
-    newName: src.DOMAIN_SUFFIX/studio/impress-y-provider
-
   # Meet — built from source and pushed to Gitea registry.
   - name: meet-backend
     newName: src.DOMAIN_SUFFIX/studio/meet-backend