kongressac: do not install dbus interface xml files
DBus interface files are only useful when the dbus API is public API and some 3rd-party bits are supposed to use it. This is simply in-app IPC so it is not useful for 3rdparty
DBus interface files are only useful when the dbus API is public API and some 3rd-party bits are supposed to use it. This is simply in-app IPC so it is not useful for 3rdparty