build: remove cache from docker.io

Remove the `--cache-from` that source the latest base-builder images
from docker.io to ensure that we only use the just built image on
ghcr.io

Author: joverlee521

devel/build

@@ -73,8 +73,6 @@ docker buildx build \
     --builder "$builder" \
     --platform "$platform" \
     --build-arg GIT_REVISION \
-    --cache-from "$BUILDER_IMAGE:latest" \
-    --cache-from "$BUILDER_IMAGE:$tag" \
     --cache-from "$FINAL_IMAGE:latest" \
     --cache-from "$FINAL_IMAGE:$tag" \
     --cache-from "$registry/$BUILDER_IMAGE:latest" \