Remove legacy Nextcloud settings (#6050) #668

Job	Run time
docker_image_builds (acme-mailcow)	50s
docker_image_builds (clamd-mailcow)	52s
docker_image_builds (dockerapi-mailcow)	1m 10s
docker_image_builds (dovecot-mailcow)	57s
docker_image_builds (netfilter-mailcow)	56s
docker_image_builds (olefy-mailcow)	1m 3s
docker_image_builds (php-fpm-mailcow)	3m 52s
docker_image_builds (postfix-mailcow)	1m 9s
docker_image_builds (rspamd-mailcow)	1m 3s
docker_image_builds (sogo-mailcow)	1m 57s
docker_image_builds (solr-mailcow)	1m 5s
docker_image_builds (unbound-mailcow)	49s
docker_image_builds (watchdog-mailcow)	48s
	16m 31s

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