Update notebooks to clean up empty cells

cookbooks/python/openai/Developing_hallucination_guardrails.ipynb

@@ -821,11 +821,6 @@
    "source": [
     "From the results above we can see the program is performing well with a high precision and recall metric. This means that the guardrails are able to accurately identify hallucinations in the model outputs. "
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": []
   }
  ],
  "metadata": {

cookbooks/python/openai/How_to_stream_completions.ipynb

@@ -232,11 +232,6 @@
     "\n",
     "However, with the streaming request, we received the first token after 0.1 seconds, and subsequent tokens every ~0.01-0.02 seconds."
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": []
   }
  ],
  "metadata": {

cookbooks/python/openai/how_to_process_image_and_video_with_gpt4o.ipynb

@@ -383,11 +383,6 @@
     "        1. Requires six 512px tiles to cover.\n",
     "        1. Total cost is `170 × 6 + 85 = 1105` tokens.\n"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": []
   }
  ],
  "metadata": {