remove unecessary code

Signed-off-by: reidliu <reid201711@gmail.com>

llama_stack/cli/model/remove.py

@@ -7,29 +7,10 @@
 import argparse
 import os
 import shutil
-import sys
 
 from llama_stack.cli.subcommand import Subcommand
 from llama_stack.distribution.utils.config_dirs import DEFAULT_CHECKPOINT_DIR
-
+from llama_stack.models.llama.sku_list import all_registered_models
-
-def _ask_for_confirm(model) -> bool:
-    input_text = input(f"Are you sure you want to remove {model}? (y/n): ").strip().lower()
-    if input_text == "y":
-        return True
-    elif input_text == "n":
-        return False
-    return False
-
-
-def _remove_model(model) -> None:
-    model_path = os.path.join(DEFAULT_CHECKPOINT_DIR, model)
-    if os.path.exists(model_path):
-        shutil.rmtree(model_path)
-        print(f"{model} removed.")
-    else:
-        print(f"{model} does not exist.")
-        sys.exit(1)
 
 
 class ModelRemove(Subcommand):
@@ -51,7 +32,7 @@ class ModelRemove(Subcommand):
             "-m",
             "--model",
             required=True,
-            help="Specify the llama downloaded model name",
+            help="Specify the llama downloaded model name, see `llama model list --downloaded`",
         )
         self.parser.add_argument(
             "-f",
@@ -61,11 +42,24 @@ class ModelRemove(Subcommand):
         )
 
     def _run_model_remove_cmd(self, args: argparse.Namespace) -> None:
+        from .safety_models import prompt_guard_model_sku
+
+        model_path = os.path.join(DEFAULT_CHECKPOINT_DIR, args.model)
+
+        model_list = []
+        for model in all_registered_models() + [prompt_guard_model_sku()]:
+            model_list.append(model.descriptor().replace(":", "-"))
+
+        if args.model not in model_list or os.path.isdir(model_path):
+            print(f"'{args.model}' is not a valid llama model or does not exist.")
+            return
+
         if args.force:
-            _remove_model(args.model)
+            shutil.rmtree(model_path)
+            print(f"{args.model} removed.")
         else:
-            confirm = _ask_for_confirm(args.model)
+            if input(f"Are you sure you want to remove {args.model}? (y/n): ").strip().lower() == "y":
-            if confirm:
+                shutil.rmtree(model_path)
-                _remove_model(args.model)
+                print(f"{args.model} removed.")
             else:
                 print("Removal aborted.")