RFC: xfwm4: drop legacy KDE systray emulation

[Matt Connell]

On Thu, 2022-10-20 at 05:16 +0000, Gaël Bonithon wrote:
> These are two different specifications:
> https://specifications.freedesktop.org/systemtray-spec/systemtray-spec-latest.html
> https://freedesktop.org/wiki/Specifications/StatusNotifierItem/
> 
> In theory the second one should have replaced the first one. In practice it was added to it.

Thank you very much for the explanation.

> On Thu, 2022-10-20 at 10:54 +0200, Enrico Weigelt, metux IT consult
> wrote:
> > Only in the narrow use case that there aren't any remote
> applications.
> > Seems to match the Wayland philosophy which rules out remote
> > applications by definition :p
> > 
> > Both are entirely different from the KDE legacy stuff. The code
> we're
> > talking about just proxied from KDE legacy to the systemtray spec.
> > 
> > Actually, I wonder why it went into the WM in the first place,
> instead
> > of being handled in the panel's systemtray plugin.

Thank you also for explaining how the KDE legacy systray works as a
proxy.