tasks: remove superfluous update code

src/reverseproxy.js

@@ -712,6 +712,8 @@ async function cleanupCerts() {
     const certFilenames = filenames.filter(f => f.endsWith('.cert'));
     const now = new Date();
 
+    debug('cleanupCerts: start');
+
     for (const certFilename of certFilenames) {
         const certFilePath = path.join(paths.NGINX_CERT_DIR, certFilename);
         const notAfter = getExpiryDate(certFilePath);
@@ -730,6 +732,8 @@ async function cleanupCerts() {
             await blobs.del(`${blobs.CERT_PREFIX}-${fqdn}.csr`);
         }
     }
+
+    debug('cleanupCerts: done');
 }
 
 async function checkCerts(options, auditSource, progressCallback) {