Missing Font Alert box

I redownloaded a graphical template from Adobe Stock and I dragged it into Premiere Pro. This template uses HouseSlant-Regular, which is a font that appears to have been in Adobe Fonts at one point, but no longer is.

I pulled this graphic into a timline, then decided I didn't like it and deleted the clip. Now every time I open this project I get an alert about the missing font. When the box appears there's no option to resolve, it just tells me that it's going to use a substitue. 

When I open the "replace fonts" menu, HouseSlant-Regular does not appear as being used in this project.

When I right click on the graphical template the "delete" option is greyed out.

I went into the Motion Graphics Template folder and it is not there. I went into my CC Library and deleted it from there, but when I open Premiere Pro I still get this alert about a missing font.

I use this editing project almost daily and having this extra alert pop up after a minute or two is extrememly frustrating. How can I make this stop?