Remove remove_invalid_worldorg_drafts rake task

This was used to remove placeholder Worldwide Organisations.

We have remove the publishing of placeholder Worldwide Organisation
pages and resolved the issue that caused them to be published.

Therefore the rake task can be removed.

lib/tasks/data_hygiene.rake

@@ -38,25 +38,6 @@ namespace :data_hygiene do
     end
   end
 
-  desc "Removes invalid about page drafts from world organisations that can prevent editing"
-  task remove_invalid_worldorg_drafts: :environment do
-    about_pages = Edition
-                    .where(document_type: "about", state: "draft")
-                    .select { |edition| edition.base_path =~ /\A\/world\/organisations\/[^\/]+\z/ }
-                    .map { |edition| [edition.document.content_id, edition.document.locale] }
-
-    puts "Found #{about_pages.size} invalid draft Worldwide Organisation editions to remove"
-    about_pages.each do |content_id, locale|
-      puts "Removing draft edition #{content_id}"
-      Commands::V2::DiscardDraft.call(
-        {
-          content_id:,
-          locale:,
-        },
-      )
-    end
-  end
-
   desc "Bulk update the organisations associated with documents."
   task :bulk_update_organisation, %i[csv_filename] => :environment do |_, args|
     DataHygiene::BulkOrganisationUpdater.call(args[:csv_filename])