x11-servers/xwayland-devel: drop HiDPI patches to unblock updates

• Rootful HiDPI[1] introduces non-trivial conflicts to rootless HiDPI
• AUR tracks Xwayland releases, so cannot help with rebases
• Sway should probably adopt force_zero_scaling from Hyprland >= 0.27

[1] https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197

This reverts commit 843e295cf33f9d2652c7b2e0d4ea0b2bc14e9c59.
This reverts commit dce99729d741f14bc81d941d29b70a8a7147298c.

(cherry picked from commit 2e435f459ff0a25e517011514c441c2a437ed79c)
(cherry picked from commit fbcb0d3c6b59caadf68ffa97af9e4f2125091852)
(cherry picked from commit 11eda6e334c128d5f30dccb893304b432168ca04)
(cherry picked from commit cf9a573044ba56652587a96f820a37fcaf36e428)