Evergreen sets DEV_VERSION_IDENTIFIER to an empty string for beta/ga builds and we don't want to pass that to hadron build info because it will use '' and then throw an error when it tries to parse it with semver. Furthermore target.js (used by hadron build info) already uses all sorts of env vars and has all sorts of fallbacks and logic that end up just interfering with what we try and set as a parameter, so rather than try and second-guess that let's rather leave it up to hadron build info to do all that.