Delete models from old location for huggingface download

Author: vmpuri

torchchat/cli/download.py

@@ -149,6 +149,13 @@ def download_and_convert(
         model_config.distribution_channel
         == ModelDistributionChannel.HuggingFaceSnapshot
     ):
+        # Check if model is already downloaded in the old location
+
+        if os.path.exists(models_dir / model_config.name):
+            print("Found old model artifacts. Downloading in Hugging Face cache...")
+            os.rmtree(models_dir / model_config.name)
+
+
         _download_hf_snapshot(model_config, hf_token)
         return