Remove support for nova-volume

* nova-volume has been removed in Grizzly
* part of delete-nova-volume

Change-Id: Iba91d69950767823d77aaaa93243b0f476dbb04d
diff --git a/unstack.sh b/unstack.sh
index 6b34aa3..1a2cad8 100755
--- a/unstack.sh
+++ b/unstack.sh
@@ -26,7 +26,6 @@
 
 # Get project function libraries
 source $TOP_DIR/lib/cinder
-source $TOP_DIR/lib/n-vol
 
 # Determine what system we are running on.  This provides ``os_VENDOR``,
 # ``os_RELEASE``, ``os_UPDATE``, ``os_PACKAGE``, ``os_CODENAME``
@@ -58,11 +57,7 @@
 SCSI_PERSIST_DIR=$CINDER_STATE_PATH/volumes/*
 
 # Get the iSCSI volumes
-if is_service_enabled cinder n-vol; then
-    if is_service_enabled n-vol; then
-        SCSI_PERSIST_DIR=$NOVA_STATE_PATH/volumes/*
-    fi
-
+if is_service_enabled cinder; then
     TARGETS=$(sudo tgtadm --op show --mode target)
     if [ $? -ne 0 ]; then
         # If tgt driver isn't running this won't work obviously
@@ -88,10 +83,6 @@
         sudo rm -rf $CINDER_STATE_PATH/volumes/*
     fi
 
-    if is_service_enabled n-vol; then
-        sudo rm -rf $NOVA_STATE_PATH/volumes/*
-    fi
-
     if [[ "$os_PACKAGE" = "deb" ]]; then
         stop_service tgt
     else