rpm: drop BR on properties-maven-plugin
rpm: drop BR on properties-maven-plugin

That one is not in Fedora 32+ anymore, and build seems to work fine
without this.

davecramer/pgjdbc,sehrope/pgjdbc,jorsol/pgjdbc,sehrope/pgjdbc,pgjdbc/pgjdbc,pgjdbc/pgjdbc,marschall/pgjdbc,AlexElin/pgjdbc,marschall/pgjdbc,davecramer/pgjdbc,pgjdbc/pgjdbc,sehrope/pgjdbc,jorsol/pgjdbc,marschall/pgjdbc,jorsol/pgjdbc,AlexElin/pgjdbc,jorsol/pgjdbc,AlexElin/pgjdbc,pgjdbc/pgjdbc,sehrope/pgjdbc,davecramer/pgjdbc,marschall/pgjdbc,davecramer/pgjdbc