Removed obsolete import

Signed-off-by: Jim Martens <github@2martens.de>

src/twomartens/masterthesis/cli.py

@@ -31,7 +31,6 @@ from typing import Callable
 from typing import Dict
 from typing import Generator
 from typing import List
-from typing import Optional
 from typing import Sequence
 from typing import Tuple
 from typing import Union