[gtk/matthiasc/for-master] ci: Disable treeview-headers-hidden reftest

[Matthias Clasen <matthiasc src gnome org>]

commit e5e7f5dd88784173a8dd31e4a5c4a24d19131e37
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Aug 5 12:41:04 2021 -0400

    ci: Disable treeview-headers-hidden reftest
    
    Somebody needs to figure out why it fails in ci so
    frequently.

 testsuite/reftests/meson.build | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/testsuite/reftests/meson.build b/testsuite/reftests/meson.build
index f2dc31e570..c166233ad9 100644
--- a/testsuite/reftests/meson.build
+++ b/testsuite/reftests/meson.build
@@ -441,8 +441,11 @@ testdata = [
   'treeview-fixed-height.css',
   'treeview-fixed-height.ref.ui',
   'treeview-fixed-height.ui',
-  'treeview-headers-hidden.ref.ui',
-  'treeview-headers-hidden.ui',
+  # this test fails with an off-by-one in ci too frequently
+  # to be left enabled. Remove it until somebody figures out
+  # what is going on there.
+  #'treeview-headers-hidden.ref.ui',
+  #'treeview-headers-hidden.ui',
   'unresolvable.css',
   'unresolvable.ref.ui',
   'unresolvable.ui',