Change stray logger usage to Paperclip.log

lib/paperclip.rb

@@ -342,14 +342,14 @@ module Paperclip
     end
 
     def save_attached_files
-      logger.info("[paperclip] Saving attachments.")
+      Paperclip.log("Saving attachments.")
       each_attachment do |name, attachment|
         attachment.send(:save)
       end
     end
 
     def destroy_attached_files
-      logger.info("[paperclip] Deleting attachments.")
+      Paperclip.log("Deleting attachments.")
       each_attachment do |name, attachment|
         attachment.send(:queue_existing_for_delete)
         attachment.send(:flush_deletes)