Removed redundant file used by debian packaging

etc/docker-dev.upstart

@@ -1,10 +0,0 @@
-description     "Run docker"
-
-start on runlevel [2345]
-stop on starting rc RUNLEVEL=[016]
-respawn
-
-script
-    test -f /etc/default/locale && . /etc/default/locale || true
-    LANG=$LANG LC_ALL=$LANG /usr/bin/docker -d
-end script