arch: Drop qemu UI packages from desktop profile

These are better suited for a mkosi tools tree rather than making
them part of the base image.

Author: DaanDeMeyer

mkosi.profiles/desktop/mkosi.conf.d/arch/mkosi.conf

@@ -11,7 +11,5 @@ Packages=
         noto-fonts
         pipewire-pulse
         power-profiles-daemon
-        qemu-hw-display-virtio-gpu
-        qemu-ui-opengl
         sof-firmware
         vulkan-intel