docstr: Remove checkpoint
docstr_tok: ["Remove","checkpoint"]
code: def remove_checkpoint(self, filepath):
      """Remove checkpoint"""
      pass
  
file_path: BigDL/python/orca/src/bigdl/orca/learn/pytorch/core/modelIO.py
imports: import os
  import io
  import shutil
  import tempfile
  from abc import ABCMeta, abstractmethod
  import torch
  from bigdl.dllib.utils.log4Error import invalidInputError
label_desc: Use image node_id 4 for calling the ModelIO obj's underlying member method code with example usage: obj.remove_checkpoint(filepath) without return types