Bug#906867: xul-ext-status4evar no longer works with firefox-esr 60

[Moritz Mühlenhoff]

On Tue, Aug 21, 2018 at 09:23:57PM +0300, Adrian Bunk wrote:
> Package: xul-ext-status4evar
> Version: 2016.10.11.01-1
> Severity: serious
> 
> XUL addons are no longer supported.

Seems dead upstream, let's remove?

Cheers,
        Moritz