remove _type attribute from nodes again

we now are using node containers for these purposes. the attribute is not used anymore

lib/radiator/outline/node.ex

@@ -17,9 +17,6 @@ defmodule Radiator.Outline.Node do
     field :content, :string
     field :creator_id, :integer
 
-    field :_type, Ecto.Enum,
-      values: [:node, :global_root, :global_inbox, :episode_inbox, :episode_root]
-
     field :level, :integer, virtual: true
 
     belongs_to :outline_node_container, NodeContainer
@@ -48,7 +45,6 @@ defmodule Radiator.Outline.Node do
       :parent_id,
       :prev_id,
       :show_id,
-      :_type,
       :outline_node_container_id
     ])
     |> put_uuid()

priv/repo/migrations/20241222120855_remove_type_from_nodes.exs

@@ -0,0 +1,9 @@
+defmodule Radiator.Repo.Migrations.RemoveTypeFromNodes do
+  use Ecto.Migration
+
+  def change do
+    alter table(:outline_nodes) do
+      remove :_type, :string, default: "node"
+    end
+  end
+end