Remove ipykernel dependency and disabled tqdm bar

PiperOrigin-RevId: 291185685

Author: Conchylicultor

docs/overview.ipynb

@@ -88,7 +88,8 @@
         "import numpy as np\n",
         "import tensorflow.compat.v2 as tf\n",
         "\n",
-        "import tensorflow_datasets as tfds"
+        "import tensorflow_datasets as tfds\n",
+        "tfds.disable_progress_bar()"
       ]
     },
     {

oss_scripts/oss_tests.sh

@@ -74,8 +74,6 @@ docs/_index.ipynb
 function test_notebook() {
   local notebook=$1
   create_virtualenv tfds_notebook $PY_BIN
-  # Pinning ipykernel to avoid https://github.com/ipython/ipykernel/issues/422
-  pip install -q jupyter "ipykernel==5.1.1"
   ipython kernel install --user --name tfds-notebook
   jupyter nbconvert \
     --ExecutePreprocessor.timeout=600 \