build: removes curl install from build.

packaging/docker/build-deploy.sh

@@ -8,6 +8,5 @@ docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
 ./push_to_docker_hub.sh "$_grafana_version"
 
 if echo "$_grafana_version" | grep -q "^master-"; then
-  apk add --no-cache curl
   ./deploy_to_k8s.sh "grafana/grafana-dev:$_grafana_version"
 fi