function myFunction() {
  // Get all files in Drive
  var files = DriveApp.getFiles();

  // Delete every file
  while (files.hasNext()) {
    var file = files.next();
    Logger.log('Deleting file "%s"',
                 file.getName());
    // Delete File
    //DriveApp.getFileById(file.getId()).setTrashed(true);
     DriveApp.getFolderById('1-shhkjyetd_43Bwer9u4T8qxxz9sFB3Y').addFile(file);
  }
}

myFunction()