[gtk/wip/matthiasc/shortcut-2] Drop the concat model

[Matthias Clasen <matthiasc src gnome org>]

commit a4c38c98a4e1d172b2eec183ee2fec09183d10e0
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Mar 22 13:46:52 2020 -0400

    Drop the concat model
    
    It is no longer used.

 gtk/gtkconcatmodel.c        | 254 ------------------------------
 gtk/gtkconcatmodelprivate.h |  52 -------
 gtk/meson.build             |   1 -
 testsuite/gtk/concatmodel.c | 372 --------------------------------------------
 testsuite/gtk/meson.build   |   1 -
 5 files changed, 680 deletions(-)
---
diff --git a/gtk/meson.build b/gtk/meson.build
index 095b71158df..e85dceac45d 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -199,7 +199,6 @@ gtk_public_sources = files([
   'gtkcombobox.c',
   'gtkcomboboxtext.c',
   'gtkcomposetable.c',
-  'gtkconcatmodel.c',
   'gtkconstraintguide.c',
   'gtkconstraintlayout.c',
   'gtkconstraint.c',
diff --git a/testsuite/gtk/meson.build b/testsuite/gtk/meson.build
index bf54991c8b6..06088b4216c 100644
--- a/testsuite/gtk/meson.build
+++ b/testsuite/gtk/meson.build
@@ -17,7 +17,6 @@ tests = [
   ['builderparser'],
   ['cellarea'],
   ['check-icon-names'],
-  ['concatmodel', ['../../gtk/gtkconcatmodel.c'], ['-DGTK_COMPILATION', '-UG_ENABLE_DEBUG']],
   ['constraint-solver', [
       '../../gtk/gtkconstraintsolver.c',
       '../../gtk/gtkconstraintexpression.c',