Old JRE in Jetty folder in CF2021

We recently installed CF2021 and our IT department flagged us as having an old JRE installed in Coldfusion2021\cfusion\jetty\jre.  We already configured CF itself to use a different JRE instead of the one in Coldfusion2021\jre, and we also set jetty to use the same JRE by changing the path in the jetty.lax file.  Interestingly, it originally referenced the main JRE, not the copy in the jetty folder.  As far as I can see, there's no reference to the jre in the jetty folder - is it safe to delete this?  Or do we need to maintain this jre as well?