Unable to empty file from Trash OS vers. 10.14.6

I have an item stuck in my trash - when I try to empty it, I get the message: "The operation can’t be completed because the item “Lightroom Catalog Smart Previews.lrdata” is in use."

I have tried multiple methods that I have found on the community forum, but none have worked. I am stumped. I have tried secure trash empty; I've checked the permissions and sharing privileges; even shift >control>option>delete - no luck with any of these. The version of Lightroom that I'm using is Lightroom Classic from Adobe CC. Even with all applications turned off I get this message that the Lightroom Catalog Smart Previews is in use...?

How might I turn off the Lightroom Catalog Smart Previews.Irdata?