code: def __remove_old_dates(self, silent_mode: bool = False):
      date_column = self.etalon_def_checked.get(
          FileColumnMeaningType.DATE.value
      ) or self.etalon_def_checked.get(
          FileColumnMeaningType.DATETIME.value
      )
      if date_column is not None and is_numeric_dtype(
          self.data[date_column]
      ):
          old_subset = self.data[
              self.data[date_column] < self.MIN_SUPPORTED_DATE_TS
          ]
          if len(old_subset) > 0:
              self.logger.info(
                  f"df before dropping old rows: {self.data.shape}"
              )
              self.data.drop(index=old_subset.index, inplace=True)  # type: ignore
              self.logger.info(
                  f"df after dropping old rows: {self.data.shape}"
              )
              if len(self.data) == 0:
                  raise ValidationError(
                      bundle.get("dataset_all_dates_old")
                  )
              else:
                  msg = bundle.get("dataset_drop_old_dates")
                  self.logger.warning(msg)
                  if not silent_mode:
                      print(msg)
                  self.warning_counter.increment()
  
imports: import csv
  import hashlib
  import logging
  import tempfile
  import time
  from ipaddress import IPv4Address, IPv6Address, _BaseAddress, ip_address
  from pathlib import Path
  from typing import Any, Callable, Dict, List, Optional, Tuple, Union
  import numpy
  import pandas
  from pandas.api.types import is_bool_dtype
  from pandas.api.types import is_datetime64_any_dtype
  from pandas.api.types import is_float_dtype, is_integer_dtype, is_numeric_dtype, is_string_dtype
  from pandas.core.dtypes.common import is_period_dtype
  from upgini.errors import ValidationError
  from upgini.http import ProgressStage, SearchProgress, get_rest_client
  from upgini.metadata import EVAL_SET_INDEX, SYSTEM_COLUMNS, SYSTEM_RECORD_ID, TARGET, DataType, FeaturesFilter, FileColumnMeaningType, FileColumnMetadata, FileMetadata, FileMetrics, ModelTaskType, NumericInterval, RuntimeParameters, SearchCustomization
  from upgini.normalizer.phone_normalizer import PhoneNormalizer
  from upgini.resource_bundle import bundle
  from upgini.sampler.random_under_sampler import RandomUnderSampler
  from upgini.search_task import SearchTask
  from upgini.utils import combine_search_keys
  from upgini.utils.email_utils import EmailSearchKeyConverter
  from upgini.utils.warning_counter import WarningCounter
label_desc: Use image node_id 24 for calling the Dataset obj's underlying member method code with example usage: obj.__remove_old_dates(silent_mode) without return types