migration to remove hidden_at from dossiers

app/models/dossier.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Dossier < ApplicationRecord
-  self.ignored_columns += [:re_instructed_at, :search_terms, :private_search_terms, :hidden_at]
+  self.ignored_columns += [:re_instructed_at, :search_terms, :private_search_terms]
 
   include DossierCloneConcern
   include DossierCorrectableConcern

db/migrate/20240918132319_remove_hidden_at_column_from_dossiers.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class RemoveHiddenAtColumnFromDossiers < ActiveRecord::Migration[7.0]
+  def change
+    safety_assured { remove_columns :dossiers, :hidden_at }
+  end
+end

db/schema.rb

@@ -483,7 +483,6 @@
     t.boolean "forced_groupe_instructeur", default: false, null: false
     t.bigint "groupe_instructeur_id"
     t.datetime "groupe_instructeur_updated_at", precision: nil
-    t.datetime "hidden_at", precision: nil
     t.datetime "hidden_by_administration_at", precision: nil
     t.datetime "hidden_by_expired_at"
     t.string "hidden_by_reason"