[tracker] Fix up the explorer gtkbuilder file for older gtk (2.12 or better)

[Robert James Taylor <robtaylor src gnome org>]

commit 041c7d8376b6288dd761e669665d2ceebfb28316
Author: Rob Taylor <rob taylor codethink co uk>
Date:   Sun May 3 12:39:37 2009 +0100

    Fix up the explorer gtkbuilder file for older gtk (2.12 or better)

 src/tracker-explorer/explorer.ui |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/tracker-explorer/explorer.ui b/src/tracker-explorer/explorer.ui
index 18edc78..2ed43b6 100644
--- a/src/tracker-explorer/explorer.ui
+++ b/src/tracker-explorer/explorer.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <interface>
-  <requires lib="gtk+" version="2.16"/>
+  <!-- interface-requires gtk+ 2.12 -->
   <!-- interface-naming-policy project-wide -->
   <object class="GtkWindow" id="explorer">
     <property name="default_width">400</property>
@@ -9,7 +9,6 @@
       <object class="GtkVPaned" id="vpaned1">
         <property name="visible">True</property>
         <property name="can_focus">True</property>
-        <property name="orientation">vertical</property>
         <property name="position">200</property>
         <property name="position_set">True</property>
         <child>