* gnu/system/vm.scm (%demo-operating-system): Remove. (system-qemu-image, system-qemu-image/shared-store, system-qemu-image/shared-store-script): Adjust accordingly.
* gnu/system/vm.scm (%demo-operating-system): Remove. (system-qemu-image, system-qemu-image/shared-store, system-qemu-image/shared-store-script): Adjust accordingly.