Carlos Garnacho 1e84c00d86 clutter: Drop dead X11 code
We don't use the ClutterBackendX11 direct constructor.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1862>
2021-07-16 19:08:06 +02:00
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2021-07-16 19:08:06 +02:00