Update .travis.yml

Author: Lukasz D. Tulikowski

.travis.yml

@@ -45,6 +45,5 @@ script:
   - gcloud docker -- push gcr.io/$GCLOUD_PROJECT/php
   - gcloud docker -- push gcr.io/$GCLOUD_PROJECT/nginx
   - gcloud docker -- push gcr.io/$GCLOUD_PROJECT/varnish
- # It does versioning now
- # - linux-amd64/helm del --purge symfony-4-docker-runtime-env
+  - linux-amd64/helm del --purge symfony-4-docker-runtime-env
   - linux-amd64/helm install helm/symfony --namespace symfony --name symfony-4-docker-runtime-env