message: Update two-sum-bsts.py
diff: @@ -35,7 +35,6 @@ class Solution(object):
  stack.append((root, True))
  stack.append((root.right, False))
  -
  left_gen, right_gen = inorder_gen(root1, True), inorder_gen(root2, False)
  left, right = next(left_gen), next(right_gen)
  while left is not None and right is not None:
  