Bug#726154: xserver-xorg-video-radeon: conffiles not removed

[Martin-Éric Racine <martin-eric.racine@iki.fi>]

Package: xserver-xorg-video-radeon
Followup-For: Bug #726154

Please note Debian Policy version 3.9.5.0 at section:

10.7.3
          Packages should remove all obsolete configuration files without
          local changes during upgrades.  The `dpkg-maintscript-helper'
          tool, available from the `dpkg' package since _Wheezy_, can help
          with this.

Cheers!
Martin-Éric