feat(xo-web): delete all the backups at once and let xo-server handle…

… the cleanup

packages/xo-web/src/common/xo/index.js

@@ -2221,13 +2221,7 @@ export const restoreBackup = (backup, sr, { generateNewMacAddresses = false, sta
 
 export const deleteBackup = backup => _call('backupNg.deleteVmBackup', { id: resolveId(backup) })
 
-export const deleteBackups = async backups => {
-  // delete sequentially from newest to oldest
-  backups = backups.slice().sort((b1, b2) => b2.timestamp - b1.timestamp)
-  for (let i = 0, n = backups.length; i < n; ++i) {
-    await deleteBackup(backups[i])
-  }
-}
+export const deleteBackups = async backups => _call('backupNg.deleteVmBackups', { ids: backups.map(backup => resolveId(backup)) })
 
 export const createMetadataBackupJob = props =>
   _call('metadataBackup.createJob', props)