docstr: Method to delete folds after evaluation
code: def erase_folds(self):
      """
      Method to delete folds after evaluation
  
      """
  
      folds = self.dir_folds + "folds/"
      shutil.rmtree(folds)
  
file_path: CaseRecommender/caserec/utils/cross_validation.py
imports: from collections import defaultdict
  import numpy
  import shutil
  from caserec.utils.split_database import SplitDatabase
label_desc: Use image node_id 5 for calling the CrossValidation obj's underlying member method code with example usage: obj.erase_folds() without return types