diff --git a/Trees/LinearRegression_LeastSquares.ipynb b/Trees/LinearRegression_LeastSquares.ipynb
deleted file mode 100644
index e8b69d8..0000000
--- a/Trees/LinearRegression_LeastSquares.ipynb
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-  "nbformat": 4,
-  "nbformat_minor": 0,
-  "metadata": {
-    "colab": {
-      "provenance": [],
-      "authorship_tag": "ABX9TyM1pe3HkxLrjbeKezq1MlM5",
-      "include_colab_link": true
-    },
-    "kernelspec": {
-      "name": "python3",
-      "display_name": "Python 3"
-    },
-    "language_info": {
-      "name": "python"
-    }
-  },
-  "cells": [
-    {
-      "cell_type": "markdown",
-      "metadata": {
-        "id": "view-in-github",
-        "colab_type": "text"
-      },
-      "source": [
-        "<a href=\"https://colab.research.google.com/github/udlbook/udlbook/blob/main/Trees/LinearRegression_LeastSquares.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
-      ]
-    },
-    {
-      "cell_type": "markdown",
-      "source": [
-        "# Least Squares Loss"
-      ],
-      "metadata": {
-        "id": "uORlKyPv02ge"
-      }
-    },
-    {
-      "cell_type": "code",
-      "execution_count": null,
-      "metadata": {
-        "id": "bbF6SE_F0tU8"
-      },
-      "outputs": [],
-      "source": [
-        "import numpy as np\n",
-        "import matplotlib.pyplot as plt"
-      ]
-    }
-  ]
-}
\ No newline at end of file