move sync_dns out of cloudron route into domains

src/cloudron.js

@@ -17,7 +17,6 @@ exports = module.exports = {
     setDashboardDomain,
     updateDashboardDomain,
     renewCerts,
-    syncDnsRecords,
 
     updateDiskUsage,
 
@@ -331,14 +330,6 @@ async function setupDnsAndCert(subdomain, domain, auditSource, progressCallback)
     await reverseProxy.ensureCertificate(location, {}, auditSource);
 }
 
-async function syncDnsRecords(options) {
-    assert.strictEqual(typeof options, 'object');
-
-    const taskId = await tasks.add(tasks.TASK_SYNC_DNS_RECORDS, [ options ]);
-    tasks.startTask(taskId, {});
-    return taskId;
-}
-
 async function updateDiskUsage() {
     const taskId = await tasks.add(tasks.TASK_UPDATE_DISK_USAGE, []);
     tasks.startTask(taskId, {});