[pitivi] Remove the update set_update_policy calls as it has been removed in Gtk3

[Jean-FranÃois Fortin Tam <jfft src gnome org>]

commit 44293be76254daee3adcb8a33bd25ab09bad6f09
Author: Thibault Saunier <thibault saunier collabora com>
Date:   Mon Jul 2 17:23:37 2012 -0400

    Remove the update set_update_policy calls as it has been removed in Gtk3

 pitivi/mediafilespreviewer.py |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/mediafilespreviewer.py b/pitivi/mediafilespreviewer.py
index d56482c..a2867c9 100644
--- a/pitivi/mediafilespreviewer.py
+++ b/pitivi/mediafilespreviewer.py
@@ -95,7 +95,6 @@ class PreviewWidget(gtk.VBox, Loggable):
         #Scale for position handling
         self.pos_adj = gtk.Adjustment()
         self.seeker = gtk.HScale(self.pos_adj)
-        self.seeker.set_update_policy(gtk.UPDATE_DISCONTINUOUS)
         self.seeker.connect('button-press-event', self._on_seeker_press_cb)
         self.seeker.connect('button-release-event', self._on_seeker_press_cb)
         self.seeker.connect('motion-notify-event', self._on_motion_notify_cb)