Fix partition table log method, don't include unused nodes.

git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@1264 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/pt.py

@@ -219,6 +219,7 @@ class PartitionTable(object):
         width under 80 column).
         """
         node_list = self.count_dict.keys()
+        node_list = [k for k, v in self.count_dict.items() if v != 0]
         node_list.sort()
         node_dict = {}
         for i, node in enumerate(node_list):