Remove obsolete pip install; latest 1.x is all we need here

PiperOrigin-RevId: 285277629
Change-Id: Ie50b1cef9a1a37cf319052ac611a56c79282f344
diff --git a/tensorflow/lite/g3doc/performance/post_training_integer_quant.ipynb b/tensorflow/lite/g3doc/performance/post_training_integer_quant.ipynb
index 943c952..a684d24 100644
--- a/tensorflow/lite/g3doc/performance/post_training_integer_quant.ipynb
+++ b/tensorflow/lite/g3doc/performance/post_training_integer_quant.ipynb
@@ -114,20 +114,6 @@
       "metadata": {
         "colab": {},
         "colab_type": "code",
-        "id": "gyqAw1M9lyab"
-      },
-      "outputs": [],
-      "source": [
-        "! pip uninstall -y tensorflow\n",
-        "! pip install -U tf-nightly"
-      ]
-    },
-    {
-      "cell_type": "code",
-      "execution_count": 0,
-      "metadata": {
-        "colab": {},
-        "colab_type": "code",
         "id": "WsN6s5L1ieNl"
       },
       "outputs": [],