Move pkg/listeners away

It is only used in `daemon` and should really live there.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

cmd/dockerd/daemon.go

@@ -32,13 +32,13 @@ import (
 	"github.com/docker/docker/daemon"
 	"github.com/docker/docker/daemon/cluster"
 	"github.com/docker/docker/daemon/config"
+	"github.com/docker/docker/daemon/listeners"
 	"github.com/docker/docker/daemon/logger"
 	"github.com/docker/docker/dockerversion"
 	"github.com/docker/docker/libcontainerd"
 	dopts "github.com/docker/docker/opts"
 	"github.com/docker/docker/pkg/authorization"
 	"github.com/docker/docker/pkg/jsonlog"
-	"github.com/docker/docker/pkg/listeners"
 	"github.com/docker/docker/pkg/pidfile"
 	"github.com/docker/docker/pkg/plugingetter"
 	"github.com/docker/docker/pkg/signal"