Potential fix for pull request finding

Remove unused import.

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: ebertin

src/visiomatic/server/config/settings.py

@@ -10,7 +10,7 @@
 from typing import Any, Tuple
 
 from astropy import units as u #type: ignore[import-untyped]
-import numpy as np
+from pydantic import Field
 from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict