Deprecate transformers model examples (#27156)

### Description
Models with corresponding Olive recipes are deprecated.


### Motivation and Context
Olive and Olive-recipes is the entry point for model optimization. We
want onnxruntime to be only for runtime. So, deprecating examples that
are already present in olive recipes.

Author: jambayk

onnxruntime/python/tools/transformers/models/gpt2/convert_to_onnx.py

@@ -21,6 +21,7 @@
 import os
 import shutil
 import sys
+import warnings
 from pathlib import Path
 
 import numpy
@@ -243,6 +244,13 @@ def get_latency_name(batch_size, sequence_length, past_sequence_length):
 
 
 def main(argv=None, experiment_name: str = "", run_id: str = "0", csv_filename: str = "gpt2_parity_results.csv"):
+    warnings.warn(
+        "This example is deprecated. Use the Olive recipe instead: "
+        "https://github.com/microsoft/olive-recipes/tree/main",
+        DeprecationWarning,
+        stacklevel=2,
+    )
+
     result = {}
     if version.parse(transformers_version) < version.parse(
         "3.1.0"

onnxruntime/python/tools/transformers/models/llama/README.md

@@ -1,3 +1,5 @@
+> **Deprecated:** This example is deprecated. Use the Olive recipes instead: https://github.com/microsoft/olive-recipes/tree/main
+
 # Contents
  - [LLaMA-2](#llama-2)
    - [Prerequisites](#prerequisites)

onnxruntime/python/tools/transformers/models/llama/convert_to_onnx.py

@@ -12,6 +12,7 @@
 import subprocess
 import sys
 import tempfile
+import warnings
 from itertools import chain
 
 import onnx
@@ -801,6 +802,12 @@ def get_args():
 
 
 def main():
+    warnings.warn(
+        "This example is deprecated. Use the Olive recipe instead: "
+        "https://github.com/microsoft/olive-recipes/tree/main",
+        DeprecationWarning,
+        stacklevel=2,
+    )
     if version.parse(torch.__version__) < version.parse("2.2.0"):
         logger.error(f"Detected PyTorch version {torch.__version__}. Please upgrade and use v2.2.0 or newer.")
         return

onnxruntime/python/tools/transformers/models/phi2/README.md

@@ -1,3 +1,5 @@
+> **Deprecated:** This example is deprecated. Use the Olive recipes instead: https://github.com/microsoft/olive-recipes/tree/main
+
 # Phi2 Optimizations
 ## Prerequisites
 A Linux machine for [TorchDynamo-based ONNX Exporter](https://pytorch.org/docs/stable/onnx.html#torchdynamo-based-onnx-exporter)\

onnxruntime/python/tools/transformers/models/phi2/convert_to_onnx.py

@@ -7,6 +7,7 @@
 import argparse
 import logging
 import os
+import warnings
 from pathlib import Path
 
 import onnx
@@ -375,6 +376,12 @@ def parse_arguments():
 
 
 def main():
+    warnings.warn(
+        "This example is deprecated. Use the Olive recipe instead: "
+        "https://github.com/microsoft/olive-recipes/tree/main",
+        DeprecationWarning,
+        stacklevel=2,
+    )
     args = parse_arguments()
 
     device = torch.device("cuda", args.device_id) if torch.cuda.is_available() else torch.device("cpu")

onnxruntime/python/tools/transformers/models/stable_diffusion/README.md

@@ -1,3 +1,5 @@
+> **Deprecated:** This example is deprecated. Use the Olive recipes instead: https://github.com/microsoft/olive-recipes/tree/main
+
 # Stable Diffusion GPU Optimization
 
 ONNX Runtime uses the following optimizations to speed up Stable Diffusion in CUDA:

onnxruntime/python/tools/transformers/models/stable_diffusion/optimize_pipeline.py

@@ -20,6 +20,7 @@
 import os
 import shutil
 import tempfile
+import warnings
 from pathlib import Path
 
 import coloredlogs
@@ -569,6 +570,12 @@ def parse_arguments(argv: list[str] | None = None):
 
 
 def main(argv: list[str] | None = None):
+    warnings.warn(
+        "This example is deprecated. Use the Olive recipe instead: "
+        "https://github.com/microsoft/olive-recipes/tree/main",
+        DeprecationWarning,
+        stacklevel=2,
+    )
     args = parse_arguments(argv)
 
     logger.info("Arguments: %s", str(args))

onnxruntime/python/tools/transformers/models/whisper/README.md

@@ -1,3 +1,5 @@
+> **Deprecated:** This example is deprecated. Use the Olive recipes instead: https://github.com/microsoft/olive-recipes/tree/main
+
 # Whisper
 
 ## Prerequisites

onnxruntime/python/tools/transformers/models/whisper/convert_to_onnx.py

@@ -7,6 +7,7 @@
 import argparse
 import logging
 import os
+import warnings
 
 import onnx
 import torch
@@ -493,6 +494,12 @@ def export_onnx_models(
 
 
 def main(argv=None):
+    warnings.warn(
+        "This example is deprecated. Use the Olive recipe instead: "
+        "https://github.com/microsoft/olive-recipes/tree/main",
+        DeprecationWarning,
+        stacklevel=2,
+    )
     args = parse_arguments(argv)
 
     setup_logger(args.verbose)