[gnome-builder] newcomers: remove unused ui file

[Christian Hergert <chergert src gnome org>]

commit ebf30efa3ad5556e7df0d037e4a1a7b3a41ab049
Author: Christian Hergert <chergert redhat com>
Date:   Thu Feb 7 14:55:50 2019 -0800

    newcomers: remove unused ui file

 src/plugins/newcomers/gbp-newcomers-project.ui | 46 --------------------------
 src/plugins/newcomers/newcomers.gresource.xml  |  1 -
 2 files changed, 47 deletions(-)
---
diff --git a/src/plugins/newcomers/newcomers.gresource.xml b/src/plugins/newcomers/newcomers.gresource.xml
index 2ca18ba34..485b37e97 100644
--- a/src/plugins/newcomers/newcomers.gresource.xml
+++ b/src/plugins/newcomers/newcomers.gresource.xml
@@ -3,7 +3,6 @@
 
   <gresource prefix="/plugins/newcomers">
     <file>newcomers.plugin</file>
-    <file>gbp-newcomers-project.ui</file>
     <file>gbp-newcomers-section.ui</file>
   </gresource>