$NetBSD$

Disable systemd media key manager.

--- plugins/Makefile.am.orig	2018-05-16 17:41:09.000000000 +0000
+++ plugins/Makefile.am
@@ -13,7 +13,6 @@ enabled_plugins =	\
 	power		\
 	housekeeping    \
 	keyboard	\
-	media-keys	\
 	mouse		\
 	orientation	\
 	screensaver-proxy \