[pitivi] Revert "Use named placeholder syntax in translatable string"

[Claude Paroz <claudep src gnome org>]

commit 44660730cae21dd3f2e33aaf66659a6c8c32d0f9
Author: Claude Paroz <claude 2xlibre net>
Date:   Fri May 22 19:14:56 2009 +0200

    Revert "Use named placeholder syntax in translatable string"
    
    Sorry, I inadvertantly pushed this patch (which is planned for a
    further version).
---
 pitivi/ui/pluginmanagerdialog.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pitivi/ui/pluginmanagerdialog.py b/pitivi/ui/pluginmanagerdialog.py
index bf10cc2..601f7c7 100644
--- a/pitivi/ui/pluginmanagerdialog.py
+++ b/pitivi/ui/pluginmanagerdialog.py
@@ -321,8 +321,8 @@ class PluginManagerDialog(object):
                     message_format = _("Update the existent plugin?"))
 
                 dialog.format_secondary_text(
-                    _("This plugin is already installed in your system.\nIf you agree, version %(v1)s will be replaced with version %(v2)s")\
-                    %{'v1': e.old_plugin.version, 'v2': e.new_plugin.version})
+                    _("This plugin is already installed in your system.\nIf you agree, version %s will be replaced with version %s")\
+                    %(e.old_plugin.version, e.new_plugin.version))
 
                 dialog.set_title(_("Duplicate plugin found"))
                 try: