[Example] [Model Free] Remove Mistral Experimental, point to model_free_ptq (#2130)

Signed-off-by: Kyle Sayers <kylesayrs@gmail.com>
Co-authored-by: Dipika Sikka <dipikasikka1@gmail.com>

Author: kylesayrs

experimental/mistral/README.md

@@ -1,45 +1,2 @@
 # Mistral-format model compression (experimental)
-
-This folder contains tools for compressing Mistral-format models, like `mistralai/Devstral-Small-2505` and `mistralai/Magistral-Small-2506`.
-
-## FP8 W8A8 Quantization
-
-This script quantizes Mistral-format models to FP8. It is not for use with HuggingFace-format models.
-
-### 1. Download the model
-
-Download the model and save it to a new "FP8" folder. We use `mistralai/Magistral-Small-2506` as an example.
-
-```bash
-huggingface-cli download mistralai/Magistral-Small-2506 --local-dir Magistral-Small-2506-FP8
-```
-
-### 2. Clean up HuggingFace-specific files
-
-Models from the Hub often include files for both the native Mistral format and the HuggingFace `transformers` format. This script works on the native format, so the `transformers` files should be removed to avoid confusion.
-
-The HuggingFace-specific files are typically `config.json`, `model-000*-of-000*.safetensors`, and `model.safetensors.index.json`. The `params.json`, `tekken.json` and `consolidated.safetensors` are for the native format.
-
-Before deleting, it's a good idea to look at the files in the directory to understand what you're removing.
-
-Once you're ready, remove the `transformers`-specific files:
-
-```bash
-rm Magistral-Small-2506/config.json Magistral-Small-2506/model.safetensors.index.json Magistral-Small-2506-FP8/model-000*
-```
-
-### 3. Run the quantization script
-
-Now, run the FP8 quantization script on the directory. This will modify the `.safetensors` files in-place and update `params.json` and `consolidated.safetensors`.
-
-```bash
-python fp8_quantize.py Magistral-Small-2506-FP8
-```
-
-### 4. Use the quantized model
-
-The model should now be ready to use in vLLM!
-
-```bash
-vllm serve Magistral-Small-2506-FP8 --tokenizer-mode mistral --config-format mistral --load-format mistral --tool-call-parser mistral --enable-auto-tool-choice
-```
+For quantizing mistral models which do not have a huggingface model definition such as `mistralai/Devstral-Small-2505`, `mistralai/Magistral-Small-2506`, and `mistralai/mistral-large-3`, please use the [`model_free_ptq`](/src/llmcompressor/entrypoints/model_free/) entrypoint.