Remove login to GCR

Author: dantevvp

.circleci/config.yml

@@ -32,7 +32,6 @@ jobs:
               circleci step halt
             fi
       - run: make image
-      - run: echo "$GCR_JSON_KEY" | docker login -u _json_key --password-stdin us.gcr.io
       - run: bin/deploy
       - run: send_webhook