CI: stop setting DOCKER_API

Author: pjonsson

.github/workflows/statistician-dive.yml

@@ -42,7 +42,7 @@ jobs:
       - name: Dive
         run: |
           docker pull ${DIVE}
-          docker run -e CI=true -e DOCKER_API_VERSION=${DOCKER_API} --rm -v /var/run/docker.sock:/var/run/docker.sock \
+          docker run -e CI=true --rm -v /var/run/docker.sock:/var/run/docker.sock \
           --mount type=bind,source=${{ github.workspace }}/docker/dive-ci.yml,target=/.dive-ci \
           ${DIVE} --ci-config /.dive-ci ${ORG}/${IMAGE}:_build