safer approach to clean cache

utils.py

@@ -130,8 +130,12 @@ def delete_unused_bin_files(model_id: str):
     for file_path in files_to_delete:
         if os.path.basename(file_path) == "config.json":
             continue
-        print(f"Deleting: {file_path}")
-        os.remove(file_path)
+        if os.path.isfile(path):
+            print(f"Deleting file: {path}")
+            os.remove(path)
+        elif os.path.isdir(path):
+            print(f"Deleting directory: {path}")
+            shutil.rmtree(path)
     
     
 def delete_http_folders():