Run pre-commit on watcher modules (#2150)

This PR removes an unused import from the watcher module as part of
running pre-commit hooks. The change addresses automatic formatting
issues that were being flagged by pre-commit in the release PR #2149

Author: pankajkoti

cosmos/operators/watcher.py

@@ -30,7 +30,6 @@
 except ImportError:  # pragma: no cover
     from airflow.operators.empty import EmptyOperator  # type: ignore[no-redef]
 
-from packaging.version import Version
 
 from cosmos._utils.watcher_state import build_producer_state_fetcher
 from cosmos.config import ProfileConfig