[tracker] docs: Fix missing tracker-ontologies.xml reference

[Sam Thursfield <sthursfield src gnome org>]

commit ef0027c2dbb5da17cba19ea3627ba087344e5d2b
Author: Sam Thursfield <sam afuera me uk>
Date:   Sat Apr 4 22:30:27 2020 +0200

    docs: Fix missing tracker-ontologies.xml reference
    
    This is a regression from a0efd1972b122d0a2a867946a068429af5e5228e.

 docs/reference/libtracker-sparql/libtracker-sparql-docs.xml | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/docs/reference/libtracker-sparql/libtracker-sparql-docs.xml 
b/docs/reference/libtracker-sparql/libtracker-sparql-docs.xml
index 7e00c13bf..12a9c16ce 100644
--- a/docs/reference/libtracker-sparql/libtracker-sparql-docs.xml
+++ b/docs/reference/libtracker-sparql/libtracker-sparql-docs.xml
@@ -36,7 +36,6 @@
     <xi:include href="xml/tracker-sparql-cursor.xml"/>
     <xi:include href="xml/tracker-notifier.xml"/>
     <xi:include href="xml/tracker-endpoint.xml"/>
-    <xi:include href="xml/tracker-ontologies.xml"/>
     <xi:include href="xml/tracker-misc.xml"/>
     <xi:include href="xml/tracker-version.xml"/>
   </part>