Update iso_url, remove unnecessary fix for QEMU

debian.json

@@ -147,7 +147,7 @@
         "http_port_min": "10082",
         "iso_checksum": "b325326614f26760fc8d4fad48df3bf48fb8a3a437298bbe3d01c5a759c889d4",
         "iso_checksum_type": "sha256",
-        "iso_url": "https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-10.4.0-amd64-xfce-CD-1.iso",
+        "iso_url": "https://cdimage.debian.org/mirror/cdimage/archive/10.4.0/amd64/iso-cd/debian-10.4.0-amd64-xfce-CD-1.iso",
         "memory_size": "4096",
         "shutdown_command": "shutdown -P now",
         "ssh_password": "toor",

scripts/fixesQEMU.sh

 #!/bin/sh -x
 
-# disable qxl
-lsmod | grep "^qxl" > /dev/null
-if [ $? -eq 0 ] ; then
-    sudo sed -i 's/^GRUB_CMDLINE_LINUX_DEFAULT=\"\(.*\)\"/GRUB_CMDLINE_LINUX_DEFAULT=\"\1 qxl.modeset=0\"/g' /etc/default/grub
-    sudo update-grub
-fi
-