How to remove a "ghost-kernel"?

then remove

sudo rm /boot/initramfs-5.8-x86_64-fallback.img 
sudo rm /boot/initramfs-5.8-x86_64.img
sudo rm /boot/vmlinuz-5.8-x86_64 
sudo rm /etc/mkinitcpio.d/linux58.preset
sudo pacman -Qs linux58-
sudo mkinitcpio -P
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