diff --git a/graphs_trees/bst/bst.py b/graphs_trees/bst/bst.py
deleted file mode 100644
index 3b17225..0000000
--- a/graphs_trees/bst/bst.py
+++ /dev/null
@@ -1,53 +0,0 @@
-from collections import deque
-
-
-class Node(object):
-
-    def __init__(self, data):
-        self.data = data
-        self.left = None
-        self.right = None
-
-    def insert(self, data):
-        if data <= self.data:
-            if self.left is None:
-                self.left = Node(data)
-            else:
-                self.left.insert(data)
-        else:
-            if self.right is None:
-                self.right = Node(data)
-            else:
-                self.right.insert(data)
-
-    def in_order_traversal(self, visit_func):
-        if self.left is not None:
-            self.left.in_order_traversal(visit_func)
-        visit_func(self.data)
-        if self.right is not None:
-            self.right.in_order_traversal(visit_func)
-
-    def pre_order_traversal(self, visit_func):
-        visit_func(self.data)
-        if self.left is not None:
-            self.left.pre_order_traversal(visit_func)
-        if self.right is not None:
-            self.right.pre_order_traversal(visit_func)
-
-    def post_order_traversal(self, visit_func):
-        if self.left is not None:
-            self.left.post_order_traversal(visit_func)
-        if self.right is not None:
-            self.right.post_order_traversal(visit_func)
-        visit_func(self.data)
-
-    def bfs(self, visit_func):
-        queue = deque()
-        queue.append(self)
-        while len(queue) > 0:
-            node = queue.popleft()
-            visit_func(node.data)
-            if node.left is not None:
-                queue.append(node.left)
-            if node.right is not None:
-                queue.append(node.right)
\ No newline at end of file
diff --git a/graphs_trees/bst/bst_challenge.ipynb b/graphs_trees/bst/bst_challenge.ipynb
index 6284d44..9082704 100644
--- a/graphs_trees/bst/bst_challenge.ipynb
+++ b/graphs_trees/bst/bst_challenge.ipynb
@@ -73,13 +73,6 @@
     "## Code"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Note: `in_order_traversal` is provided for testing purposes."
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,