To delete a Power Pack...
1) Log in at http://superbetter.com and go to the My Power Packs area: https://www.superbetter.com/power_packs?mine=true
2) Click the "View" button next to the power pack you'd like to remove.
3) Click "remove" on the next screen.
This will remove all power pack content from your view.
Hope this helps, and thanks for playing SuperBetter!