[tomboy] configure.ac: remove orphan ENABLE_DBUS reference

[Alex Tereschenko <alexter src gnome org>]

commit f97c87e73af4c81ccea429e70eb89f7bc89e8117
Author: Alex Tereschenko <frozen and blue gmail com>
Date:   Wed Dec 28 16:54:57 2016 +0100

    configure.ac: remove orphan ENABLE_DBUS reference
    
    DBus is mandatory since 2010 (commit 5071d7902).
    
    Signed-off-by: Alex Tereschenko <frozen and blue gmail com>

 configure.ac |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e04fc09..e6cdc4d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -383,8 +383,6 @@ ${PACKAGE}-${VERSION}
     Windows Support:            ${ENABLE_WIN}
     UNIT Test Support:          ${ENABLE_NUNIT}
 
-    D-Bus Support:              ${ENABLE_DBUS}
-
     GNOME Panel Applet Support: ${ENABLE_PANEL_APPLET}
 
     Evolution Add-in:           ${ENABLE_EVOLUTION}