Reformat and remove stale debugging

docker/watch_and_restart.py

@@ -25,9 +25,7 @@ The watcher ignores `__pycache__`, `.pyc` files and `.git` paths.
 """
 import os
 import subprocess
-import sys
 import time
-from pathlib import Path
 
 from watchdog.events import FileSystemEventHandler
 from watchdog.observers import Observer