[gitg] Clean up reference to non-existent schema

[Jiro Matsuzawa <jmatsuzawa src gnome org>]

commit 0fc8ad73283dd56663aece34396aac154bbd2008
Author: Jiro Matsuzawa <jmatsuzawa gnome org>
Date:   Thu Sep 12 21:38:44 2013 +0900

    Clean up reference to non-existent schema
    
    https://bugzilla.gnome.org/show_bug.cgi?id=707970

 data/org.gnome.gitg.gschema.xml.in.in |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/data/org.gnome.gitg.gschema.xml.in.in b/data/org.gnome.gitg.gschema.xml.in.in
index 554ff1d..2563b01 100644
--- a/data/org.gnome.gitg.gschema.xml.in.in
+++ b/data/org.gnome.gitg.gschema.xml.in.in
@@ -8,7 +8,6 @@
     <child name="main" schema="org.gnome.gitg.preferences.main" />
     <child name="history" schema="org.gnome.gitg.preferences.history" />
     <child name="commit" schema="org.gnome.gitg.preferences.commit" />
-    <child name="diff" schema="org.gnome.gitg.preferences.diff" />
     <child name="hidden" schema="org.gnome.gitg.preferences.hidden" />
   </schema>
   <schema gettext-domain="@GETTEXT_PACKAGE@" id="org.gnome.gitg.preferences.main" 
path="/org/gnome/gitg/preferences/main/">