Identify all reports that use a specific report for layout component reference

[dougp]

Good day, Gurus.

I have found a very old "report" that is obviously intended to provide components for other reports using the "layout component reference" feature.  I suspect that this particular report is not used, but I'd like to be sure before I delete it.

Knowing what I do about report specs and the Content Store, I imagine, like most things, this task won't be difficult, but will be excessively tedious -- probably involving SQL and PowerShell.  I'm hoping...

Does anybody here already have a script (or combination of scripts) that does this?