[gegl] tests: disable matting-levin test

[Øyvind Kolås <ok src gnome org>]

commit c42794ec6d8f7cab6659424a91ed8a1781fcd34f
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Aug 15 00:24:51 2017 +0200

    tests: disable matting-levin test
    
    Because result depends on specific version of third party lib.

 tests/compositions/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/compositions/Makefile.am b/tests/compositions/Makefile.am
index e4dfa2a..bf36e82 100644
--- a/tests/compositions/Makefile.am
+++ b/tests/compositions/Makefile.am
@@ -80,7 +80,7 @@ if HAVE_JASPER
 NO_OPENCL_TESTS += jp2-load.xml
 endif
 if HAVE_UMFPACK
-TESTS += matting-levin.xml
+ # TESTS += matting-levin.xml
 endif
 
 check-TESTS: $(TESTS)