Revert "Whitespace fix"
Revert "Whitespace fix"

This reverts commit 7610ee4b5bbf1910a4c3d86659de220633e9f2f0.

This was a deliberate grouping of imports: first cousins, then siblings.

The reasoning isn’t as strong as when you have standard library, then
third-party, then first-party imports, but it’s still reasonable. I did
it in more places than just that one file, anyway.

fastmail/overture