Remove Upstart scripts

Upstart has been EOL for 8 years and isn't used by any distributions we support any more.

Signed-off-by: Tianon Gravi <admwiggin@gmail.com>
(cherry picked from commit 0d8087fbbc9daf521eca6f9f3ea91607f0022346)
Signed-off-by: Bjorn Neergaard <bjorn.neergaard@docker.com>

contrib/init/sysvinit-debian/docker.default

@@ -1,4 +1,4 @@
-# Docker Upstart and SysVinit configuration file
+# Docker SysVinit configuration file
 
 #
 # THIS FILE DOES NOT APPLY TO SYSTEMD

contrib/init/upstart/docker.conf

@@ -1,72 +0,0 @@
-description "Docker daemon"
-
-start on (filesystem and net-device-up IFACE!=lo)
-stop on runlevel [!2345]
-
-limit nofile 524288 1048576
-
-# Having non-zero limits causes performance problems due to accounting overhead
-# in the kernel. We recommend using cgroups to do container-local accounting.
-limit nproc unlimited unlimited
-
-respawn
-
-kill timeout 20
-
-pre-start script
-	# see also https://github.com/tianon/cgroupfs-mount/blob/master/cgroupfs-mount
-	if grep -v '^#' /etc/fstab | grep -q cgroup \
-		|| [ ! -e /proc/cgroups ] \
-		|| [ ! -d /sys/fs/cgroup ]; then
-		exit 0
-	fi
-	if ! mountpoint -q /sys/fs/cgroup; then
-		mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
-	fi
-	(
-		cd /sys/fs/cgroup
-		for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
-			mkdir -p $sys
-			if ! mountpoint -q $sys; then
-				if ! mount -n -t cgroup -o $sys cgroup $sys; then
-					rmdir $sys || true
-				fi
-			fi
-		done
-	)
-end script
-
-script
-	# modify these in /etc/default/$UPSTART_JOB (/etc/default/docker)
-	DOCKERD=/usr/bin/dockerd
-	DOCKER_OPTS=
-	if [ -f /etc/default/$UPSTART_JOB ]; then
-		. /etc/default/$UPSTART_JOB
-	fi
-	exec "$DOCKERD" $DOCKER_OPTS --raw-logs
-end script
-
-# Don't emit "started" event until docker.sock is ready.
-# See https://github.com/docker/docker/issues/6647
-post-start script
-	DOCKER_OPTS=
-	DOCKER_SOCKET=
-	if [ -f /etc/default/$UPSTART_JOB ]; then
-		. /etc/default/$UPSTART_JOB
-	fi
-
-	if ! printf "%s" "$DOCKER_OPTS" | grep -qE -e '-H|--host'; then
-		DOCKER_SOCKET=/var/run/docker.sock
-	else
-		DOCKER_SOCKET=$(printf "%s" "$DOCKER_OPTS" | grep -oP -e '(-H|--host)\W*unix://\K(\S+)' | sed 1q)
-	fi
-
-	if [ -n "$DOCKER_SOCKET" ]; then
-		while ! [ -e "$DOCKER_SOCKET" ]; do
-			initctl status $UPSTART_JOB | grep -qE "(stop|respawn)/" && exit 1
-			echo "Waiting for $DOCKER_SOCKET"
-			sleep 0.1
-		done
-		echo "$DOCKER_SOCKET is up"
-	fi
-end script