un-ups your start

We do not need upstart, it is so thoroughly obsolete that we should not
care about supporting it.

Change-Id: Ie0ca084740845555fddffacc899cd129c9a4c1fe

misc/upstart/local.mk

@@ -1,7 +0,0 @@
-ifdef HOST_LINUX
-
-  $(foreach n, nix-daemon.conf, $(eval $(call install-file-in, $(d)/$(n), $(sysconfdir)/init, 0644)))
-
-  clean-files += $(d)/nix-daemon.conf
-
-endif

misc/upstart/nix-daemon.conf.in

@@ -1,5 +0,0 @@
-description "Nix Daemon"
-start on filesystem
-stop on shutdown
-respawn
-exec @bindir@/nix-daemon --daemon