I found this app on Play and it works great on my Shamu. It does require root of course and very easy to hide/unhide app updates.
Hide Updates in Play Store:
https://play.google.com/store/apps/details?id=com.whitedavidp.hideupdatesinplaystore
Hide Updates in Play Store:
https://play.google.com/store/apps/details?id=com.whitedavidp.hideupdatesinplaystore