Merge pull request matplotlib#27498 from anntzer/undel

Remove unnecessary del local variables at end of Gcf.destroy.

Author: timhoffm

lib/matplotlib/_pylab_helpers.py

@@ -64,7 +64,6 @@ def destroy(cls, num):
         if hasattr(manager, "_cidgcf"):
             manager.canvas.mpl_disconnect(manager._cidgcf)
         manager.destroy()
-        del manager, num
 
     @classmethod
     def destroy_fig(cls, fig):