[gtk/wip/matthiasc/can-focus] Remove the focus test

[Matthias Clasen <matthiasc src gnome org>]

commit 5d74747c505ed1c93e83c0c87eb64a86ff034f30
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Apr 8 07:59:23 2020 -0400

    Remove the focus test
    
    This test was expecting to make existing widgets like
    GtkBox focusable by setting :can-focus. That just doesn't
    work anymore.
    
    The focus chain testing that is done here is already
    better covered by test-focus-chain, so lets just remove this.

 testsuite/gtk/focus.c     | 227 ----------------------------------------------
 testsuite/gtk/meson.build |   1 -
 2 files changed, 228 deletions(-)
---
diff --git a/testsuite/gtk/meson.build b/testsuite/gtk/meson.build
index b4c3bc4955..c225d7a3de 100644
--- a/testsuite/gtk/meson.build
+++ b/testsuite/gtk/meson.build
@@ -29,7 +29,6 @@ tests = [
   ['filterlistmodel'],
   ['flattenlistmodel'],
   ['floating'],
-  ['focus'],
   #['gestures'],
   ['grid'],
   ['grid-layout'],