Remove comment that is no longer relevant

Author: markmcd

site/en/tutorials/images/transfer_learning.ipynb

@@ -1049,7 +1049,6 @@
         "# Retrieve a batch of images from the test set\n",
         "image_batch, label_batch = test_dataset.as_numpy_iterator().next()\n",
         "predictions = model.predict_on_batch(image_batch).flatten()\n",
-        "# Apply a sigmoid since our model returns logits\n",
         "predictions = tf.where(predictions < 0.5, 0, 1)\n",
         "\n",
         "print('Predictions:\\n', predictions.numpy())\n",