code: def deregister() -> None:
      """
      Remove pandas formatters and converters.
  
      Removes the custom converters added by :func:`register`. This
      attempts to set the state of the registry back to the state before
      pandas registered its own units. Converters for pandas' own types like
      Timestamp and Period are removed completely. Converters for types
      pandas overwrites, like ``datetime.datetime``, are restored to their
      original value.
  
      See Also
      --------
      register_matplotlib_converters : Register pandas formatters and converters
          with matplotlib.
      """
      plot_backend = _get_plot_backend("matplotlib")
      plot_backend.deregister()
  
imports: from __future__ import annotations
  from contextlib import contextmanager
  from typing import TYPE_CHECKING, Generator
  from pandas.plotting._core import _get_plot_backend
label_desc: Use image node_id 3 for calling a global function with example usage: deregister() without return types