[tracker] nepomuk: Drop unused ontology file

[Carlos Garnacho <carlosg src gnome org>]

commit 571c9c3fe2418b2891d31e4148b868fa1a662197
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Sep 22 23:05:30 2018 +0200

    nepomuk: Drop unused ontology file
    
    These NAO ontology extensions were split from the main ontology prior
    to 2.0 because they are both non-official and unnecessary for core
    ontology concepts.
    
    However, it was apparently never added to build, so this piece of
    ontology did effectively disappear. Internally it was just used by the
    evolution plugin (which disappeared in 2.0 as well), and since there
    has been no outcry it seems mostly unused on the outside. It just doesn't
    make sense to mourn for this overly generic ontology.
    
    So drop this file, and just rescue nao:predefined-tag-favorite as
    this is still used by apps (it just doesn't happen to be a nao:Tag).

 src/ontologies/nepomuk/31-nao-custom.ontology | 29 ---------------------------
 src/ontologies/nepomuk/90-tracker.ontology    |  4 +++-
 2 files changed, 3 insertions(+), 30 deletions(-)
---
diff --git a/src/ontologies/nepomuk/90-tracker.ontology b/src/ontologies/nepomuk/90-tracker.ontology
index 3ac446708..78e0c30e5 100644
--- a/src/ontologies/nepomuk/90-tracker.ontology
+++ b/src/ontologies/nepomuk/90-tracker.ontology
@@ -8,7 +8,7 @@
 @prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
 
 tracker: a tracker:Ontology ;
-       nao:lastModified "2014-01-03T02:14:35Z" .
+       nao:lastModified "2018-09-30T13:00:00Z" .
 
 tracker:isDefaultTag a rdf:Property ;
        rdfs:domain nao:Tag ;
@@ -58,3 +58,5 @@ fts: a tracker:Namespace ;
 
 tracker:extractor-data-source a nie:DataSource ;
        rdfs:label "Tracker extractor data source" .
+
+nao:predefined-tag-favorite a nao:Tag .
\ No newline at end of file