title: Deleting a file with TransferManager Amazon S3
body: <p>I am using TransferManager to upload and overwrite existing files on S3. For instance: </p>
  
  <pre><code>Upload uploadExample = transferManager.upload(bucketName, key, file);
  </code></pre>
  
  <p>I could theoretically upload a blank file to delete, but I do not want to do this. Is there another way to delete (Uploading a null file perhaps?)? I don't see anything like it in the API.</p>
  
  <p>Thanks</p>