[ksmserver] Drop internal loading of alternative window managers
Summary:
ksmserver's loading of other window manager relies on files in
share/windowmanagers/$name.desktop with the Exec line of the window
manager.
This was something previously installed by plasma-desktop and removed in
- All this code path is now redundant as well as the wmChanged DBus
method used by the deleted KCM.
Setting KDEWM manually will still work as before.
Test Plan:
Logged in
Got kwin as before
Reviewers: Plasma, broulik, apol
Reviewed By: Plasma, broulik, apol
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D21758