code: def unpatch():
      
      _PATCHED_MODULES.discard('httplib')
      setattr(httplib, PATCH_FLAG, False)
      # _send_request encapsulates putrequest, putheader[s], and endheaders
      unwrap(httplib.HTTPConnection, '_send_request')
      unwrap(httplib.HTTPConnection, 'getresponse')
      unwrap(httplib.HTTPResponse, 'read')
docs: Unpatch any previously patched modules.
      This operation is idempotent.