Move Let's Encrypt out of Nextcloud (to HAProxy)

nextcloud.env.template

@@ -15,5 +15,3 @@ MYSQL_ROOT_PWD_FILE=/run/secrets/mysql_pwd
 DB_HOST=db
 NEXTCLOUD_DB_NAME=nextcloud
 NEXTCLOUD_DB_USER=nextcloud
-# Let's Encrypt
-ADMIN_EMAIL=${ADMIN_EMAIL}