Revert "Add short SHA destination to build_assets_image"

This reverts commit 5ba79dba.

It turns out we didn't need a tag with the short SHA after all.

scripts/build_assets_image

@@ -20,21 +20,13 @@ cp Dockerfile.assets assets_container.build/
 
 COMMIT_REF_SLUG_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_REF_SLUG}
 COMMIT_SHA_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_SHA}
+COMMIT_REF_NAME_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_REF_NAME}
 
 DESTINATIONS="--destination=$COMMIT_REF_SLUG_DESTINATION --destination=$COMMIT_SHA_DESTINATION"
 
-# For EE branch builds, add a truncated SHA destination for later use by Omnibus
-# auto-deploy builds
-if [[ "${ASSETS_IMAGE_NAME}" == "gitlab-assets-ee" ]] && [ -n "$CI_COMMIT_BRANCH" ]
-then
-  COMMIT_SHORT_SHA_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_SHA:0:11}
-  DESTINATIONS="$DESTINATIONS --destination=$COMMIT_SHORT_SHA_DESTINATION"
-fi
-
 # Also tag the image with GitLab version, if running on a tag pipeline, so
 # other projects can simply use that instead of computing the slug.
 if [ -n "$CI_COMMIT_TAG" ]; then
-  COMMIT_REF_NAME_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_REF_NAME}
   DESTINATIONS="$DESTINATIONS --destination=$COMMIT_REF_NAME_DESTINATION"
 fi