Cleanup nginx conf #1569

Job	Run time
build-docker (internet.nl, docker/Dockerfile, app)	6m 27s
build-docker (unbound, docker/Dockerfile, unbound)	1m 18s
build-docker (linttest, docker/Dockerfile, linttest)	7m 16s
build-docker (test-runner, docker/test-runner.Dockerfile)	3m 43s
build-docker (webserver, docker/webserver.Dockerfile)	2m 6s
build-docker (grafana, docker/grafana.Dockerfile)	1m 35s
build-docker (util, docker/util.Dockerfile)	1m 42s
integration-test	5m 18s
lint/check	2m 30s
development-environment-test	3m 26s
batch-integration-test	4m 1s
docs	1s
test	4m 3s
	43m 26s

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