I'm assuming you used the native Uninstaller in the HW application folder (?).
I just tried it (I had a test version on my Mac that I was finished using). After the uninstall, I was left with a "ghost" icon for HW Alt Config #1 on Launchpad, that couldn't be deleted by the normal method.
There is an app available (google "Launchpad Manager"), that will work for a quickie in trial mode. It can be used to delete any remaining HW icons from your Launchpad. But it will NOT uninstall HW. That has to be done using the native uninstaller.