Qt5X11Extras (QX11Info) was added in 762983b5d853ba8444c4efee450ea872b294060e, but it doesn't seem to actually be used. Qt6 doesn't yet ship X11Extras, so let's remove it.
Qt5X11Extras (QX11Info) was added in 762983b5d853ba8444c4efee450ea872b294060e, but it doesn't seem to actually be used. Qt6 doesn't yet ship X11Extras, so let's remove it.