Remove unused preference default_country_id

app/models/spree/app_configuration.rb

@@ -37,7 +37,6 @@ module Spree
     preference :currency_symbol_position, :string, default: "before"
     preference :currency_thousands_separator, :string, default: ","
     preference :display_currency, :boolean, default: false
-    preference :default_country_id, :integer
     preference :default_meta_description, :string, default: 'OFN demo site'
     preference :default_meta_keywords, :string, default: 'ofn, demo'
     preference :default_seo_title, :string, default: ''

db/migrate/20250128031518_delete_default_country_id_preference.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+class DeleteDefaultCountryIdPreference < ActiveRecord::Migration[7.0]
+  def up
+    execute <<~SQL.squish
+      DELETE FROM spree_preferences
+      WHERE key = '/spree/app_configuration/default_country_id '
+    SQL
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2025_01_13_055412) do
+ActiveRecord::Schema[7.0].define(version: 2025_01_28_031518) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"
   enable_extension "plpgsql"

spec/base_spec_helper.rb

@@ -234,12 +234,10 @@ RSpec.configure do |config|
     end
   end
 
-  default_country_id = DefaultCountry.id
   # Ensure we start with consistent config settings
   config.before(:each) do
     reset_spree_preferences do |spree_config|
       # These are all settings that differ from Spree's defaults
-      spree_config.default_country_id = default_country_id
       spree_config.shipping_instructions = true
     end
     CurrentConfig.clear_all

spec/support/seeds.rb

@@ -22,8 +22,3 @@ if Spree::Country.where(name: "France").empty?
   Spree::State.create!({ "name" => "Alsace", "abbr" => "Als", :country => country })
   Spree::State.create!({ "name" => "Aquitaine", "abbr" => "Aq", :country => country })
 end
-
-# Since the country seeding differs from other environments, the default
-# country id has to be updated here. This line can be removed as soon as the
-# default country id is replaced by something database independent.
-Spree::Config.default_country_id = Spree::Country.find_by(name: 'Australia').id