Fix: Remove deprecated versioning helpers

supabase/migrations/20251015181416_8351b769-6a25-4893-be6b-d6e3aec3fb8d.sql

@@ -0,0 +1,15 @@
+-- Enable RLS on the archive table
+ALTER TABLE public.entity_versions_archive ENABLE ROW LEVEL SECURITY;
+
+-- Create RLS policies for the archive table (same as original)
+CREATE POLICY "Moderators can view all archived versions"
+  ON public.entity_versions_archive
+  FOR SELECT
+  TO authenticated
+  USING (is_moderator(auth.uid()));
+
+CREATE POLICY "Public can view current archived versions"
+  ON public.entity_versions_archive
+  FOR SELECT
+  TO authenticated
+  USING (is_current = true);