Is there a way to reveal an item in the Finder from Launchpad?
The answer to the question is No, there's no way to reveal an item in the Finder from Launchpad.
However, there is a relatively easy way to remove items from the Launchpad, which is what I really wanted to do, and it does not require moving the item out of the Applications folder: Launchpad Manager. It's an inexpensive utility that helps you manage your Launchpad, and, crucially, remove any items you'd like from it.