You can't delete the default presets that are included with Elastic Transcoder.
Version: (assembly version)
public class DeletePresetRequest : AmazonElasticTranscoderRequest IRequestEvents
The DeletePresetRequest type exposes the following members
Gets and sets the property Id.
The identifier of the preset for which you want to get detailed information.
Supported in: 4.5, 4.0, 3.5
.NET for Windows Store apps:
Supported in: Windows 8.1, Windows 8
.NET for Windows Phone:
Supported in: Windows Phone 8.1