Update tf_hub_delf_module.ipynb

removing StringIO and PY3 setup since they are the same inside of the six package

PiperOrigin-RevId: 207256626

examples/colab/tf_hub_delf_module.ipynb

@@ -122,7 +122,7 @@
         "from skimage.feature import plot_matches\n",
         "from skimage.measure import ransac\n",
         "from skimage.transform import AffineTransform\n",
-        "from six import StringIO\n",
+        "from six import BytesIO\n",
         "import tensorflow as tf\n",
         "import tensorflow_hub as hub\n",
         "from six.moves.urllib.request import urlopen"
@@ -222,7 +222,8 @@
         "def download_and_resize_image(url, filename, new_width=256, new_height=256):\n",
         "  response = urlopen(url)\n",
         "  image_data = response.read()\n",
-        "  pil_image = Image.open(StringIO(image_data))\n",
+        "  image_data = BytesIO(image_data)\n",
+        "  pil_image = Image.open(image_data)\n",
         "  pil_image = ImageOps.fit(pil_image, (new_width, new_height), Image.ANTIALIAS)\n",
         "  pil_image_rgb = pil_image.convert('RGB')\n",
         "  pil_image_rgb.save(filename, format='JPEG', quality=90)\n",