[empathy/next] Remove tp_dbus_properties_mixin_iface_init which no longer exists

[Simon McVittie <smcv src gnome org>]

commit 768cd999de261f2898df30281936296c9d4ab794
Author: Simon McVittie <simon mcvittie collabora co uk>
Date:   Tue Apr 8 13:17:05 2014 +0100

    Remove tp_dbus_properties_mixin_iface_init which no longer exists
    
    Bug: https://bugs.freedesktop.org/show_bug.cgi?id=77144

 tests/empathy-tls-test.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/tests/empathy-tls-test.c b/tests/empathy-tls-test.c
index 535b4ea..5d5c13a 100644
--- a/tests/empathy-tls-test.c
+++ b/tests/empathy-tls-test.c
@@ -43,8 +43,6 @@ static void mock_tls_certificate_iface_init (gpointer, gpointer);
 G_DEFINE_TYPE_WITH_CODE(MockTLSCertificate, mock_tls_certificate, G_TYPE_OBJECT,
         G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_AUTHENTICATION_TLS_CERTIFICATE,
                 mock_tls_certificate_iface_init)
-        G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_DBUS_PROPERTIES,
-                tp_dbus_properties_mixin_iface_init)
 )
 
 static void