process pdf from doc

app/jobs/generate_preview_images_job.rb

@@ -1,17 +0,0 @@
-# frozen_string_literal: true
-
-class GeneratePreviewImagesJob
-  include Sidekiq::Job
-
-  sidekiq_options queue: :images
-
-  def perform(params = {})
-    attachment = ActiveStorage::Attachment.find(params['attachment_id'])
-
-    max_page = [attachment.metadata['pdf']['number_of_pages'].to_i - 1,
-                Templates::ProcessDocument::MAX_NUMBER_OF_PAGES_PROCESSED].min
-
-    Templates::ProcessDocument.generate_document_preview_images(attachment, attachment.download, 1..max_page,
-                                                                concurrency: 1)
-  end
-end