i think the right method in line 204 should be "_delete_node()"

[Castagnna]

Hi, I think the right method in line 204 should be "_delete_node()"
because the method self.delete_node() doesn't take a Node object as a parameter.

Python3_Data_Structures/AVL_Tree/main.py

Line 204 in 8ceac35

self.delete_node(successor)