code: def remove_all_configurations():
      old_sections, old_proxies = (conf._sections, conf._proxies)
      conf._sections = {}
      conf._proxies = {}
      return old_sections, old_proxies
  
file_path: airflow/tests/utils/test_config.py
imports: from __future__ import annotations
  import logging
  from contextlib import contextmanager
  from pathlib import Path
  from airflow.configuration import conf
label_desc: Use image node_id 1 for calling a global function with example usage: remove_all_configurations() and returns: old_sections,  old_proxies