[gtk+] tests: Remove subsurface test

[Benjamin Otte <otte src gnome org>]

commit 0e93e39e749398d5524bc69c0e04c2c4f6e7a948
Author: Benjamin Otte <otte redhat com>
Date:   Sun Nov 6 22:03:45 2016 +0100

    tests: Remove subsurface test
    
    It did lots of ubsupported things (like creating subsurfaces on every
    platform).

 tests/Makefile.am  |    1 -
 tests/subsurface.c |  116 ----------------------------------------------------
 2 files changed, 0 insertions(+), 117 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index ab67fe4..506df3c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -31,7 +31,6 @@ endif
 noinst_PROGRAMS =  $(TEST_PROGS)       \
        overlayscroll                   \
        syncscroll                      \
-       subsurface                      \
        animated-resizing               \
        animated-revealing              \
        motion-compression              \