Bug#909055: RM: ubiquity-extension/0.6.4~pre20140729-1

[Moritz Muehlenhoff]

Package: release.debian.org
Severity: normal
User: release.debian....@packages.debian.org
Usertags: rm

Broken with Firefox ESR60 and dead upstream. Filed for removal
from the archive in #909053, also remove it from stable.

Cheers,
        Moritz