chroot /target apt-get remove grub-efi-arm64-signed
rm /target/boot/efi/EFI/BOOT/fbaa64.efi
rm /target/boot/efi/EFI/debian/fbaa64.efi
chroot /target apt-get remove grub-efi-arm64-signed
rm /target/boot/efi/EFI/BOOT/fbaa64.efi
rm /target/boot/efi/EFI/debian/fbaa64.efi