simplify the profile settings form

db/migrate/20230606210549_add_confirmation_to_users.rb

@@ -1,8 +0,0 @@
-class AddConfirmationToUsers < ActiveRecord::Migration[7.0]
-  def change
-    add_column :users, :confirmation_token, :string, unique: true
-    add_column :users, :confirmed_at, :datetime
-    add_column :users, :confirmation_sent_at, :datetime
-    add_column :users, :unconfirmed_email, :string, unique: true
-  end
-end