[glibmm] tests/Makefile.am: Remove the last remnants of glibmm_weakref

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 7ffe375602f71c25b27b370f2c6cce0dba70f99e
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Mon Jul 3 15:42:14 2017 +0200

    tests/Makefile.am: Remove the last remnants of glibmm_weakref
    
    to avoid some warnings when Makefile is generated from Makefile.am.

 tests/Makefile.am |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index b8c5606..dc4cebb 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -121,7 +121,5 @@ glibmm_null_vectorutils_test_SOURCES     = glibmm_null_vectorutils/main.cc
 glibmm_null_vectorutils_test_LDADD       = $(giomm_ldadd)
 glibmm_refptr_test_SOURCES               = glibmm_refptr/main.cc
 glibmm_refptr_sigc_bind_test_SOURCES     = glibmm_refptr_sigc_bind/main.cc
-glibmm_weakref_test_SOURCES              = glibmm_weakref/main.cc
-glibmm_weakref_test_LDADD                = $(giomm_ldadd)
 glibmm_bytearray_test_SOURCES            = glibmm_bytearray/main.cc
 glibmm_ustring_make_valid_test_SOURCES   = glibmm_ustring_make_valid/main.cc