FIX: do not add super().destroy to Canvas destroy method

This goes up the chain to the GUI classes that do not have this method.

Author: tacaswell

lib/matplotlib/backends/backend_gtk4.py

@@ -90,7 +90,6 @@ def __init__(self, figure=None):
 
     def destroy(self):
         CloseEvent("close_event", self)._process()
-        super().destroy()
 
     def set_cursor(self, cursor):
         # docstring inherited