Replacing chandelier with new, No ground wire in old chandelier
Ground wires are there to prevent a metal chassis from becoming live in a electrical fault.   if the chandelier is out of range of human contact, the ground wire is not necessary (although, legally it may be.). For safety, look at GFCI options- either at the panel, or by taking the power to the switch off a nearby GFCI outlet.  Then, just coil the ground wire up and tuck it away.