We understand that there are reasons someone would want to remove the swackett app from their mac (we hope it's not because they didn't like it). There is an easy 3 step process to remove the app from your system:
1) Open Finder
2) Go to your Applications folder inside of Finder
3) Drag the swackett app from the Finder window to your trashcan (you could also Command + click the app and choose Move to Trash).
That's it. The swackett app is now in the trash can.
If you would ever want to re-download the app, you can go to your Purchased tab in the Mac App Store and, after signing in, click the Install button.