delete unused variable

pkg/volume/scaleio/sio_client.go

@@ -417,7 +417,7 @@ func (c *sioClient) WaitForAttachedDevice(token string) (string, error) {
 				return "", err
 			}
 			go func() {
-				glog.V(4).Infof(log("waiting for volume %s to be mapped/attached", token))
+				glog.V(4).Info(log("waiting for volume %s to be mapped/attached", token))
 			}()
 			if path, ok := devMap[token]; ok {
 				glog.V(4).Info(log("device %s mapped to vol %s", path, token))
@@ -451,7 +451,7 @@ func (c *sioClient) WaitForDetachedDevice(token string) error {
 				return err
 			}
 			go func() {
-				glog.V(4).Infof(log("waiting for volume %s to be unmapped/detached", token))
+				glog.V(4).Info(log("waiting for volume %s to be unmapped/detached", token))
 			}()
 			// cant find vol id, then ok.
 			if _, ok := devMap[token]; !ok {

pkg/volume/scaleio/sio_plugin.go

@@ -27,7 +27,6 @@ import (
 )
 
 const (
-	sioName           = "scaleio"
 	sioPluginName     = "kubernetes.io/scaleio"
 	sioConfigFileName = "sioconf.dat"
 )