code: def delete_example(wit_id, index):
      WitWidget.widgets[wit_id].delete_example(index)
  
imports: import json
  import math
  import tensorflow
  from IPython import display
  from google.colab import output
  from witwidget.notebook import base
label_desc: Use image node_id 2 for calling a global function with example usage: delete_example(wit_id, index) without return types