Remove markdown table of now deprecated OpenAI models

Author: zackproser

learn/generation/openai/chatgpt/plugins/langchain-docs-plugin.ipynb

@@ -559,16 +559,9 @@
         "id": "ig7Py5NVtXPn"
       },
       "source": [
-        "Note that for the tokenizer we defined the encoder as `\"cl100k_base\"`. This is a specific tiktoken encoder which is used by `gpt-3.5-turbo`. Other encoders exist and at the time of writing are summarized as:\n",
-        "\n",
-        "| Encoder | Models |\n",
-        "| --- | --- |\n",
-        "| `cl100k_base` | `gpt-4`, `gpt-3.5-turbo`, `text-embedding-ada-002` |\n",
-        "| `p50k_base` | `text-davinci-003`, `code-davinci-002`, `code-cushman-002` |\n",
-        "| `r50k_base` | `text-davinci-001`, `davinci`, `text-similarity-davinci-001` |\n",
-        "| `gpt2` | `gpt2` |\n",
-        "\n",
-        "You can find these details in the [Tiktoken `model.py` script](https://github.com/openai/tiktoken/blob/main/tiktoken/model.py), or using `tiktoken.encoding_for_model`:"
+        "Note that for the tokenizer we defined the encoder as `\"cl100k_base\"`. This is a specific tiktoken encoder which is used by `gpt-3.5-turbo`, as well as `gpt-4`, and `text-embedding-ada-002` which are models supported by OpenAI at the time of this writing. Other encoders may be available, but are used with models that are now deprecated by OpenAI.\n",
+                "\n",
+        "You can find more details in the [Tiktoken `model.py` script](https://github.com/openai/tiktoken/blob/main/tiktoken/model.py), or using `tiktoken.encoding_for_model`:"
       ]
     },
     {