backupsite: remove bc- prefix from id

src/backupsites.js

@@ -542,7 +542,7 @@ async function add(data, auditSource) {
         privateKeyEncoding: { type: 'pkcs8', format: 'pem' }
     });
 
-    const id = `bc-${crypto.randomUUID()}`;
+    const id = crypto.randomUUID();
     if (!safe.fs.mkdirSync(`${paths.BACKUP_INFO_DIR}/${id}`)) throw new BoxError(BoxError.FS_ERROR, `Failed to create info dir: ${safe.error.message}`);
 
     debug('add: validating new storage configuration');