The remap-on-restore workaround was introduced in 3b9d0ce
("HACK: Remap minimized X11 windows on restore"), but forcing an
unmap/map cycle on unminimize now regresses Steam: restoring a
non-fullscreen window can leave the main surface black while input
and tooltips still work.
Keep the existing X11 hidden-state handling and only drop the
forced remap cycle. This preserves the newer minimize/unminimize
signaling for X11 clients while avoiding an extra restore-time
remap.