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[wayland] Drop pointless xwayland connection check

Vlad Zahorodnii requested to merge work/drop-pointless-xwayland-rootful-check into master

Xwayland can operate in two modes - rootless and rootful. When Xwayland operates in the rootful mode, a container window is created where all native X11 clients are placed. The container window is an xdg-toplevel surface. Most compositors are not interested in rootful mode.

When Xwayland operates in the rootless mode, every X11 window is going to be represented with a Wayland surface that has no role assigned to it. In order to associate a wayland surface with an X11 window, Xwayland will send a client message of type WL_SURFACE_ID.

Since we want Xwayland operate only in rootless mode, the check that verifies that a newly created xdg-toplevel surface belongs to Xwayland is pointless. We never going to hit that case.

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