remove references to personal image registry

it's gone for a while

.ci/sync-all.sh

@@ -5,13 +5,14 @@ set -ef
 
 [ -z "${CI_DEBUG}" ] || set -xv
 
-: "${IMAGE_NAME:?}" "${EXT_IMAGE_NAME:?}"
+: "${IMAGE_NAME:?}"
+
+[ -n "${EXTRA_TAGS}" ] || exit 0
 
 . .ci/envsh.common
 . .ci/envsh.registry
 
 image_src="docker://${IMAGE_NAME}"
-image_dst="docker://${EXT_IMAGE_NAME}"
 
 oci_dir="${PWD}/oci-layers"
 image_interim="oci:${oci_dir}:$(basename "${IMAGE_NAME}"):${IMAGE_TAG}"
@@ -33,20 +34,12 @@ while : ; do
     img_copy "${image_src}:${IMAGE_TAG}" "${image_interim}" || r=$?
     [ "$r" = 0 ] || break
 
-    echo " -> ${image_dst}:${IMAGE_TAG}"
-    img_copy "${image_interim}" "${image_dst}:${IMAGE_TAG}" || r=$?
-    [ "$r" = 0 ] || break
-
     for tag in ${EXTRA_TAGS} ; do
         [ -n "${tag}" ] || continue
 
         echo " -> ${image_src}:${tag}"
         img_copy "${image_interim}" "${image_src}:${tag}" || r=$?
         [ "$r" = 0 ] || break
-
-        echo " -> ${image_dst}:${tag}"
-        img_copy "${image_interim}" "${image_dst}:${tag}" || r=$?
-        [ "$r" = 0 ] || break
     done
 
     break