code: def unregister_size_estimator(cls):
      del _op_type_to_size_estimator[cls]
  
imports: import sys
  from typing import Any, Callable, Dict, List, Tuple, Type, Union
  import numpy
  from ...metrics import Metrics
  from ...typing import TileableType, ChunkType, OperandType
  from ...utils import calc_data_size
  from ..context import Context
  from ..mode import is_eager_mode
  from ..entity import OutputType, ExecutableTuple, get_chunk_types, get_tileable_types, get_output_types, get_fetch_class
label_desc: Use image node_id 27 for calling the TileableOperandMixin obj's underlying member method code with example usage: obj.unregister_size_estimator(cls) without return types