Remove unused option from ObjectReplicator.__init__

disk_chunk_size is unused by the ObjectReplicator class. Note that it
*is* used by the object replicator process; it's just that
DiskFileManager is the one that pulls it out of the conf and pays
attention to it. Keeping it as an attribute on ObjectReplicator is
unnecessary.

Change-Id: I1eeef7b33873b4c8bb269ca02dcb067098b6fded

swift/obj/replicator.py

@@ -83,7 +83,6 @@ class ObjectReplicator(Daemon):
         self.node_timeout = float(conf.get('node_timeout', 10))
         self.sync_method = getattr(self, conf.get('sync_method') or 'rsync')
         self.network_chunk_size = int(conf.get('network_chunk_size', 65536))
-        self.disk_chunk_size = int(conf.get('disk_chunk_size', 65536))
         self.headers = {
             'Content-Length': '0',
             'user-agent': 'object-replicator %s' % os.getpid()}