Bug#768186: debian-installer: popularity-contest is always installed

[Stéphane Aulery <saulery@free.fr>]

Package: debian-installer
Severity: minor
Tags: d-i

Hello,

Although I replied that I do not wish to participate in the collection of
popularity-contest, the package is installed.

Regards,

-- System Information:
Debian Release: jessie/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16-3-amd64 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash