LibreOffice Suite: Deleting Font Name MRU List Entries

Guys, when one accesses the Font Name box in the toolbar of any LibreOffice product, one will see up to four (4) of the most recently used font names, followed by a light, horizontal line, then all the font names, in alphabetical order. This is very annoying to me!

Is there a simple, effective, way to eliminate the MRU list altogether, (that is, those entries appearing above the light, horizontal line in the dropdown box) in all the LibreOffice suite office products?

Thanks, guys!