Merge pull request neetcode-gh#3169 from dvijay96/patch-1

Update 0226-invert-binary-tree.java

Author: a93a

java/0226-invert-binary-tree.java

@@ -4,7 +4,6 @@ public TreeNode invertTree(TreeNode root) {
         if (root == null) return null;
         TreeNode node = new TreeNode(root.val);
         node.right = invertTree(root.left);
-        node.val = root.val;
         node.left = invertTree(root.right);
         return node;
     }