docstr: Unregister a named resource with resource tracker.
docstr_tok: ["Unregister","a","named","resource","with","resource","tracker","."]
code: def unregister(self, name, rtype):
      """Unregister a named resource with resource tracker."""
      self.ensure_running()
      self._send("UNREGISTER", name, rtype)
  
file_path: catboost/contrib/python/joblib/joblib/externals/loky/backend/resource_tracker.py
imports: import os
  import shutil
  import sys
  import signal
  import warnings
  import threading
  from _multiprocessing import sem_unlink
  from multiprocessing import util
  from .None import spawn
label_desc: Use image node_id 6 for calling the ResourceTracker obj's underlying member method code with example usage: obj.unregister(name, rtype) without return types