Actually apply the pre-commit fixers to the codebase.

This can be redone manually with
`pre-commit run --all`

While the pre-commit hook could be merged to run locally,
it is much cleaner to align all the files to best-practice
syntax in a single commit. It is also required for server-side
validation.

scripts/postrm.sh

@@ -7,4 +7,3 @@ if [ "$1" = "purge" ] || [ "$1" = "0" ]; then
   rm -f /etc/ntfy/server.yml /etc/ntfy/client.yml
   rmdir /etc/ntfy || true
 fi
-