Revert systemd-sysupgrade patches

[toanju]

• Revert "add parametrized systemd-sysupdate@ service for kvm-node-agent"
• Revert "added systemd-container package: provides sysupdate tooling"
• Revert "Mask systemd-sysupdate-reboot.timer"
• Revert "adapt dracut root label partition"
• Revert "fix fstab modification"
• Revert "just replace the line instead append, shorten to garden_"
• Revert "re-label the root partition"
• Revert "fix Typos (label -> Label)"
• Revert "use a common directory for sysupdate images"
• Revert "Use ignite image for metal3, non-ignite otherwise"
• Revert "add sysupdate.d for root partition a/b upgrades"
• Revert "A/B root partitions, Two more for persistence"
• Revert "Exclude the secondary partition from auto-mount"
• Revert "Add B partition for potential A/B setup"
• Revert "Undo disabled systemd-repart"
• Revert "support creation of UKI efi executables for sysupdate"