Remove from __future__ imports as we move away from Python 2

math_linear_algebra.ipynb

@@ -11,22 +11,6 @@
     "*Machine Learning relies heavily on Linear Algebra, so it is essential to understand what vectors and matrices are, what operations you can perform with them, and how they can be useful.*"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Before we start, let's ensure that this notebook works well in both Python 2 and 3:"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "from __future__ import division, print_function, unicode_literals"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},