code: public com.cloudant.client.api.model.Response removeAttachment(String id, String rev, String attachmentName) {
          Response couchDbResponse = db.removeAttachment(id, rev, attachmentName);
          com.cloudant.client.api.model.Response response = new com.cloudant.client.api.model
                  .Response(couchDbResponse);
          return response;
      }
docs: Removes the attachment from a document the specified {@code _id} and {@code _rev} and {@code attachmentName}
  values.
  <P>Example usage:</P>
  <pre>
  {@code
  Response response = db.removeAttachment("exampleId", "1-12345exampleRev", "example.jpg");
  }
  </pre>
  
  @param id  the document _id field
  @param rev the document _rev field
  @param attachmentName the attachment name
  @return {@link com.cloudant.client.api.model.Response}
  @throws NoDocumentException If the document is not found in the database.
  @throws DocumentConflictException if the attachment cannot be removed because of a conflict
  @see <a
  href="https://console.bluemix.net/docs/services/Cloudant/api/attachments.html#delete"
  target="_blank">Documents - delete</a>