code: def _cleanup_tickets_older_than(files):
      oldfiles = list(filter(_file_older_than, files))
      for file in oldfiles:
          print("object %s older than 8 hours. Deleting" % file.key)
          file.delete()
      return files
  
file_path: sagemaker-python-sdk/ci-scripts/queue_build.py
imports: from __future__ import absolute_import
  import os
  import re
  import time
  import boto3
label_desc: Use image node_id 6 for calling a global function with example usage: _cleanup_tickets_older_than(files) and returns: files