[gtk] reftests: Remove style-properties-nth-child test

[Benjamin Otte <otte src gnome org>]

commit 3a8a9fc2bdd060cb837647982c5a1597a6323e97
Author: Benjamin Otte <otte redhat com>
Date:   Fri Mar 29 04:04:27 2019 +0100

    reftests: Remove style-properties-nth-child test
    
    Style properties don't exist anymore.

 testsuite/reftests/meson.build                     |  3 -
 testsuite/reftests/style-properties-nth-child.css  | 11 ----
 .../reftests/style-properties-nth-child.ref.ui     | 69 ----------------------
 testsuite/reftests/style-properties-nth-child.ui   | 54 -----------------
 4 files changed, 137 deletions(-)
---
diff --git a/testsuite/reftests/meson.build b/testsuite/reftests/meson.build
index b254f8d87e..3a1f9ac688 100644
--- a/testsuite/reftests/meson.build
+++ b/testsuite/reftests/meson.build
@@ -375,9 +375,6 @@ testdata = [
   'style-context-save-inheritance.css',
   'style-context-save-inheritance.ref.ui',
   'style-context-save-inheritance.ui',
-  'style-properties-nth-child.css',
-  'style-properties-nth-child.ref.ui',
-  'style-properties-nth-child.ui',
   'style-properties-only-child.css',
   'style-properties-only-child.ref.ui',
   'style-properties-only-child.ui',