Did you remove the package?
Check the files in /etc/grub.d/*
and remove (after removing the customizer package, if not yet) the respective files.
sudo pacman -Rcns grub-customizer
pacman -Qo /etc/grub.d/*
Did you remove the package?
Check the files in /etc/grub.d/*
and remove (after removing the customizer package, if not yet) the respective files.
sudo pacman -Rcns grub-customizer
pacman -Qo /etc/grub.d/*