Remove deprecated comment in fine-tuning notebook (#443)

examples/prompt-tuning-sst2.ipynb

@@ -92,9 +92,6 @@
    },
    "outputs": [],
    "source": [
-    "# Choose a model you'd like to prompt-tune. We recommend starting with\n",
-    "# a smaller model (bigscience/bloom-7b1-petals) for faster prototyping.\n",
-    "# The code below uses LLaMA-65B.\n",
     "MODEL_NAME = \"enoch/llama-65b-hf\"\n",
     "\n",
     "# Choose a prompt-tuning mode ('ptune' or 'deep_ptune').\n",