code: def remove_calltip_window(self, event=None):
      if self.active_calltip:  # Setup to None.
          self.active_calltip = None
          self.tips_removed += 1
  
imports: from idlelib import calltip
  import unittest
  from unittest.mock import Mock
  import textwrap
  import types
  import re
  from idlelib.idle_test.mock_tk import Text
  from test.support import MISSING_C_DOCSTRINGS
label_desc: Use image node_id 2 for calling the WrappedCalltip obj's underlying member method code with example usage: obj.remove_calltip_window(event) without return types