Remove IPC support for Swift driver

Signed-off-by: Sylvain Baubeau <sbaubeau@redhat.com>

cmd/registry-storagedriver-swift/main.go

@@ -1,28 +0,0 @@
-// +build ignore
-
-package main
-
-import (
-	"encoding/json"
-	"os"
-
-	"github.com/Sirupsen/logrus"
-
-	"github.com/docker/distribution/registry/storage/driver/ipc"
-	"github.com/docker/distribution/registry/storage/driver/swift"
-)
-
-// An out-of-process Swift driver, intended to be run by ipc.NewDriverClient
-func main() {
-	parametersBytes := []byte(os.Args[1])
-	var parameters map[string]string
-	err := json.Unmarshal(parametersBytes, &parameters)
-	if err != nil {
-		panic(err)
-	}
-
-	driver, err := swift.FromParameters(parameters)
-	if err != nil {
-		panic(err)
-	}
-}