Remove vim modelines

We're deprecating vim modelines in favor of `.editorconfig`.

Removing vim modelines could be done using two one-liners. Most of the vim modelines
were followed by an empty line, so this one-liner took care of these ones:

```sh
rg '^# vim: .+\n\n' -l | xargs sed -i '/^# vim: /,+1d'
```

Then some of the vim modelines were followed by a pylint configuration line, so running
this one-liner afterwards took care of that:

```sh
rg '^# vim:' -l | xargs sed -i '/^# vim: /d'
```

1 files changed, 0 insertions, 2 deletions

diff --git a/setup.py b/setup.py
index 187d0902b..e73ba1d0d 100755
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,5 @@
 #!/usr/bin/env python3
 
-# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
-
 # Copyright 2014-2021 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
 #
 # This file is part of qutebrowser.