[rygel] docs: Fix the build

[Murray Cumming <murrayc src gnome org>]

commit a9ebfbdd1bea5f2f8174e965c81a315768394d11
Author: Murray Cumming <murrayc openismus com>
Date:   Fri Feb 8 13:59:12 2013 +0100

    docs: Fix the build
    
    Remove a reference to a non-existant .xml file.

 .../gtkdoc/librygel-renderer-gst-docs.xml          |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/doc/reference/librygel-renderer-gst/gtkdoc/librygel-renderer-gst-docs.xml b/doc/reference/librygel-renderer-gst/gtkdoc/librygel-renderer-gst-docs.xml
index fda2572..b5274c7 100644
--- a/doc/reference/librygel-renderer-gst/gtkdoc/librygel-renderer-gst-docs.xml
+++ b/doc/reference/librygel-renderer-gst/gtkdoc/librygel-renderer-gst-docs.xml
@@ -27,7 +27,6 @@
     <title>librygel-renderer-gst API Reference</title>
     <xi:include href="xml/rygel-playbin-renderer.xml"/>
     <xi:include href="xml/rygel-playbin-player.xml"/>
-    <xi:include href="xml/rygel-playbin-plugin.xml"/>
   </chapter>
 
   <chapter id="object-tree">