To disable an Asset that you have successfully published to the Asset StoreA growing library of free and commercial assets created by Unity and members of the community. Offers a wide variety of assets, from textures, models and animations to whole Project examples, tutorials and Editor extensions. More info
See in Glossary, email assetstore@unity3d.com with the following:
You must send the request from the email address attached to the publisher account of the Asset or Assets you want to disable.