Correctly delete xml file after restore and conversion to rrd
Correctly delete xml file after restore and conversion to rrd

When doing "Generating RRD graphs" at bootup, the data is restored from /cf/conf/rrd.tgz into xml format files in /var/db/rrd. Those xml files are then convert to rrd files. After that, the xml files should be deleted - but the xml file path was not quite right, so they were not being deleted.
This fixes it.
dennypage/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,dennypage/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,dennypage/pfsense,NewEraCracker/pfsense,jxmx/pfsense,pfsense/pfsense,pfsense/pfsense,pfsense/pfsense,phil-davis/pfsense,NOYB/pfsense,ptorsten/pfsense,ch1c4um/pfsense,dennypage/pfsense,brunostein/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,ch1c4um/pfsense,brunostein/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,NOYB/pfsense,ch1c4um/pfsense,phil-davis/pfsense,ch1c4um/pfsense,NOYB/pfsense,brunostein/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,jxmx/pfsense