code: public void delete(final String aBucket, final String aKey, final Handler<HttpClientResponse> aHandler) {
          createDeleteRequest(aBucket, aKey, aHandler).end();
      }
docs: Deletes an S3 resource.
  <p>
  <code>DELETE (bucket, key) -&gt; handler(Response)</code>
  </p>
  
  @param aBucket An S3 bucket
  @param aKey An S3 key
  @param aHandler A response handler