code: def delocalize(data: DatetimeColumn) -> DatetimeColumn:
      """
      Convert a timezone-aware datetime column to a timezone-naive one.
      If the column is already timezone-naive, return it as is.
      """
      if isinstance(data, DatetimeTZColumn):
          return data._local_time
      # already timezone-naive:
      return data
  
imports: import os
  import zoneinfo
  from functools import lru_cache
  from typing import Tuple, cast
  import numpy
  import pandas
  import cudf
  from cudf._lib.labeling import label_bins
  from cudf._lib.search import search_sorted
  from cudf._lib.timezone import make_timezone_transition_table
  from cudf.core.column.column import as_column, build_column
  from cudf.core.column.datetime import DatetimeColumn, DatetimeTZColumn
  from cudf.core.dataframe import DataFrame
  from cudf.utils.dtypes import _get_base_dtype
label_desc: Use image node_id 7 for calling a global function with example usage: delocalize(data) and returns: data, data