Drop usage of system/grub2-efi package as a source

Now rootfs needs to provide their artifacts from packages so the dir is
no longer used, so the config needs to change

The package is still there as alpine will need it as a last resort but
it wont support secureboot

Signed-off-by: Itxaka <itxaka@kairos.io>

tools-image/Dockerfile

@@ -1,7 +1,7 @@
 # https://quay.io/repository/kairos/packages?tab=tags&tag=latest
 ARG LEAP_VERSION=15.5
 ARG LUET_VERSION=0.35.0
-ARG ENKI_VERSION=v0.0.3
+ARG ENKI_VERSION=v0.0.4
 
 FROM quay.io/luet/base:$LUET_VERSION AS luet
 FROM quay.io/kairos/enki:${ENKI_VERSION} as enki

tools-image/config.yaml

@@ -1,6 +1,3 @@
 iso:
-  uefi:
-  - dir:/efi
   image:
-  - dir:/efi
   - dir:/grub2