[gtk/drop-popover-demo] gtk-demo: Remove the popover demo

[Matthias Clasen <matthiasc src gnome org>]

commit e31bbb41d225dd1663e6927ef4096bf6144ec514
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Apr 1 15:44:22 2020 -0400

    gtk-demo: Remove the popover demo
    
    It doesn't work anymore, since popovers now need
    support in the parent, and we don't really need
    a demo just for popovers. They are used everywhere
    already.
    
    Fixes: https://gitlab.gnome.org/GNOME/gtk/-/issues/2429

 demos/gtk-demo/demo.gresource.xml |   4 -
 demos/gtk-demo/meson.build        |   1 -
 demos/gtk-demo/popover.c          | 185 --------------------------------------
 demos/gtk-demo/popover.ui         |  85 ------------------
 4 files changed, 275 deletions(-)
---
diff --git a/demos/gtk-demo/demo.gresource.xml b/demos/gtk-demo/demo.gresource.xml
index 7e4046cb6a..f6477002ce 100644
--- a/demos/gtk-demo/demo.gresource.xml
+++ b/demos/gtk-demo/demo.gresource.xml
@@ -202,7 +202,6 @@
     <file>peg_solitaire.c</file>
     <file>pickers.c</file>
     <file>pixbufs.c</file>
-    <file>popover.c</file>
     <file>printing.c</file>
     <file>revealer.c</file>
     <file>rotated_text.c</file>
@@ -240,9 +239,6 @@
     <file>messages.txt</file>
     <file>apple-red.png</file>
   </gresource>
-  <gresource prefix="/popover">
-    <file>popover.ui</file>
-  </gresource>
   <gresource prefix="/glarea">
     <file>glarea-gl.fs.glsl</file>
     <file>glarea-gl.vs.glsl</file>
diff --git a/demos/gtk-demo/meson.build b/demos/gtk-demo/meson.build
index 08694a7355..8c2392c29e 100644
--- a/demos/gtk-demo/meson.build
+++ b/demos/gtk-demo/meson.build
@@ -54,7 +54,6 @@ demos = files([
   'peg_solitaire.c',
   'pickers.c',
   'pixbufs.c',
-  'popover.c',
   'printing.c',
   'revealer.c',
   'rotated_text.c',