--- a/taskcluster/ci/hazard/kind.yml
+++ b/taskcluster/ci/hazard/kind.yml
@@ -13,18 +13,16 @@ job-defaults:
     treeherder:
         kind: build
         tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         implementation: docker-worker
         max-run-time: 36000
         docker-image: {in-tree: desktop-build}
-        env:
-            MOZ_AUTOMATION: "1"
 
 jobs:
     linux64-shell-haz/debug:
         description: "JS Shell Hazard Analysis Linux"
         index:
             product: firefox
             job-name: shell-haz-debug
         treeherder:

--- a/taskcluster/scripts/builder/build-l10n.sh
+++ b/taskcluster/scripts/builder/build-l10n.sh
@@ -30,17 +30,16 @@ fail() {
     echo # make sure error message is on a new line
     echo "[build-l10n.sh:error]" "${@}"
     exit 1
 }
 
 export MOZ_CRASHREPORTER_NO_REPORT=1
 export MOZ_OBJDIR=obj-firefox
 export TINDERBOX_OUTPUT=1
-export MOZ_AUTOMATION=1
 
 # Ensure that in tree libraries can be found
 export LIBRARY_PATH=$LIBRARY_PATH:$WORKSPACE/src/obj-firefox:$WORKSPACE/src/gcc/lib64
 
 # test required parameters are supplied
 if [[ -z ${MOZHARNESS_SCRIPT} ]]; then fail "MOZHARNESS_SCRIPT is not set"; fi
 if [[ -z ${MOZHARNESS_CONFIG} ]]; then fail "MOZHARNESS_CONFIG is not set"; fi