class_docstr: Remove field names if present.
  
  Parameters
  ----------
  field_names
      List of names of the fields that will be removed
code: def transform(self, data: DataEntry) -> DataEntry:
      for k in self.field_names:
          data.pop(k, None)
      return data
  
imports: from collections import Counter
  from typing import Any, Dict, List
  from gluonts.core.component import validated
  from gluonts.dataset.common import DataEntry
  from ._base import MapTransformation, SimpleTransformation
label_desc: Use image node_id 2 for calling the RemoveFields obj's underlying member method code with example usage: obj.transform(data) and returns: data