[vino] Remove unused --with-network-manager option

[David King <davidk src gnome org>]

commit 29ec419130115a359a307985820e87e54f95a2ab
Author: David King <amigadave amigadave com>
Date:   Tue Sep 6 09:52:51 2016 +0200

    Remove unused --with-network-manager option

 Makefile.am |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 77c893d..c354d16 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,7 +4,6 @@ SUBDIRS = po
 AM_DISTCHECK_CONFIGURE_FLAGS = \
        --with-avahi \
        --with-secret \
-       --with-network-manager \
        --with-telepathy \
        --with-gnutls \
        --with-gcrypt \