Plasma 6 proposal: remove per-activity power management settings KCM
Previously discussed at teams/vdg/issues#16 (closed), but I'm moving it here for more visibility, since this is the better place for it.
Per-activity power management settings add a full dimension of complexity in the power management code both in terms of UI and implementation, and have few to no use cases which aren't served better by something else.
With the Activities proposals in https://invent.kde.org/plasma/kactivitymanagerd/-/issues, all Plasma settings could ultimately be made per-activity, allowing people to self-satisfy anyway.
Let's remove this KCM and its features.