Cleaning up application categories.

Change-Id: Id3c937323123b6089cedf7b31cd01151f6aca8e1
diff --git a/apps/pathpainter/BUCK b/apps/pathpainter/BUCK
index 71eec89..bbb142a 100644
--- a/apps/pathpainter/BUCK
+++ b/apps/pathpainter/BUCK
@@ -11,7 +11,7 @@
 
 onos_app (
     title = 'Path Visualization',
-    category = 'Utility',
+    category = 'GUI',
     url = 'http://onosproject.org',
     description = 'Extends the GUI topology view by adding an overlay that allows the operator ' +
         'to visualize topology paths using various forms of path-finding algorithms such as ' +