fix linting

src/builder2ibek/autosave.py

@@ -1,13 +1,10 @@
-import re
 from pathlib import Path
 from typing import Optional
 
 import typer
-from ruamel.yaml import YAML, CommentedMap
+from ruamel.yaml import YAML
 
 from builder2ibek import __version__
-from builder2ibek.builder import Builder
-from builder2ibek.convert import dispatch
 
 cli = typer.Typer()
 yaml = YAML()