DEV: Remove references to categories_only_optimized (#30151)

This category style has been removed in f1700ca5.

db/migrate/20241206121401_delete_categories_only_optimized_site_setting.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class DeleteCategoriesOnlyOptimizedSiteSetting < ActiveRecord::Migration[7.2]
+  def up
+    execute "DELETE FROM site_settings WHERE name = 'desktop_category_page_style' AND value = 'categories_only_optimized'"
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end