[kupfer] objects: DirectorySource does not need pickle_prepare

[Ulrik Sverdrup <usverdrup src gnome org>]

commit ade0f8e94a7c95f1bd91fc2cce2a37904f9457fe
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Tue Sep 8 17:52:21 2009 +0200

    objects: DirectorySource does not need pickle_prepare

 kupfer/objects.py |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/kupfer/objects.py b/kupfer/objects.py
index 8c7b92f..57f9024 100644
--- a/kupfer/objects.py
+++ b/kupfer/objects.py
@@ -959,10 +959,6 @@ class DirectorySource (Source, PicklingHelperMixin, FilesystemWatchMixin):
 		return "%s.%s(\"%s\", show_hidden=%s)" % (self.__class__.__module__,
 				self.__class__.__name__, str(self.directory), self.show_hidden)
 
-	def pickle_prepare(self):
-		# the monitor token is not pickleable
-		self.monitor = None
-
 	def unpickle_finish(self):
 		self.monitor = self.monitor_directories(self.directory)