A rEFInd-Minimalist for rEFInd.
Clone this repository into a themes directory located inside the refind EFI directory
(usually /boot/EFI/refind)
Then add include themes/rEFInd-Minimalist/theme.conf at the end of the refind.conf.
To hide unwanted options simply press delete while the icon is selected. To restore hidden icons use the lower right button.