Remove folder from App Drawer in TouchWiz (not home screen / app launcher)
Once you have created a folder in the Apps (i.e. I created a "Temp") and then  remove it:
1. Go to the App Drawer, Apps, and find the panel holding the folder.
2. Menu > Edit
3. Press and hold the folder until "Remove" appears.
4. Drag to Trash Can (Remove).
5. Save

Gone.