[gtk+] gtk4-demo: Stop using pixdata resources

[Matthias Clasen <matthiasc src gnome org>]

commit 0c61095630d55a7d94441380cb5c0821bb3d2731
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Oct 18 08:53:07 2017 +0800

    gtk4-demo: Stop using pixdata resources
    
    This does not really help, and pixdata is deprecated.

 demos/gtk-demo/demo.gresource.xml |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/gtk-demo/demo.gresource.xml b/demos/gtk-demo/demo.gresource.xml
index 583d29e..64b01a4 100644
--- a/demos/gtk-demo/demo.gresource.xml
+++ b/demos/gtk-demo/demo.gresource.xml
@@ -100,8 +100,8 @@
     <file>gtkfishbowl.h</file>
   </gresource>
   <gresource prefix="/iconview">
-    <file preprocess="to-pixdata">gnome-fs-directory.png</file>
-    <file preprocess="to-pixdata">gnome-fs-regular.png</file>
+    <file>gnome-fs-directory.png</file>
+    <file>gnome-fs-regular.png</file>
   </gresource>
   <gresource prefix="/stack">
     <file>stack.ui</file>