[Merge] lp:~anders-kaseorg/update-notifier/apt-check-speed into lp:update-notifier

[Brian Murray]

I believe you've removed a bit too much here as depcache.read_pinfile() would read /etc/apt/preferences or /etc/apt/preferences.d/.
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https://code.launchpad.net/~anders-kaseorg/update-notifier/apt-check-speed/+merge/188555
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~anders-kaseorg/update-notifier/apt-check-speed into lp:update-notifier.