Simplify: we're running under "set -e"

bin/apt-snapshots-expiry

@@ -6,7 +6,7 @@ for dir in config/APT_snapshots.d vagrant/definitions/tails-builder/config/APT_s
 (
     set -eu
     echo "${dir:?}:"
-    cd "${dir:?}" && \
+    cd "${dir:?}"
     for ARCHIVE in * ; do
         SERIAL="$(cat ${ARCHIVE:?}/serial)"
         if [ "${SERIAL:?}" = 'latest' ]; then