remove uncesseary DATABASE_URL from ci

Author: artcz

.github/workflows/build_and_deploy.yml

@@ -33,7 +33,6 @@ jobs:
       run: |
         docker run --rm \
           -e DJANGO_SETTINGS_MODULE=intbot.settings \
-          -e DATABASE_URL=postgres://testuser:testpassword@localhost:5432/testdb \
           --network host \
           intbot \
           make in-container/tests