Disabling persistence on VOLTHA 10 stacks scale job

Change-Id: I7816e32bc6c777158ccefb7530154b64acf0c3a4
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index 2b64de2..f6e20ee 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -158,7 +158,7 @@
           withEapol: true
           withDhcp: true
           withIgmp: false
-          extraHelmFlags: "-f /home/jenkins/voltha-scale/voltha-values.yaml --set etcd.persistence.enabled=true,etcd.persistence.storageClass=longhorn"
+          extraHelmFlags: "-f /home/jenkins/voltha-scale/voltha-values.yaml"
 
       - 'voltha-scale-measurements':
           name: 'voltha-scale-measurements-master-10-stacks-2-16-32-dt-subscribers'
@@ -181,7 +181,7 @@
           withEapol: false
           withDhcp: false
           withIgmp: false
-          extraHelmFlags: "-f /home/jenkins/voltha-scale/voltha-values.yaml --set etcd.persistence.enabled=true,etcd.persistence.storageClass=longhorn"
+          extraHelmFlags: "-f /home/jenkins/voltha-scale/voltha-values.yaml"
 
       - 'voltha-scale-measurements':
           name: 'voltha-scale-measurements-master-10-stacks-2-16-32-tt-subscribers'
@@ -204,7 +204,7 @@
           withEapol: false
           withDhcp: true
           withIgmp: true
-          extraHelmFlags: "-f /home/jenkins/voltha-scale/voltha-values.yaml --set etcd.persistence.enabled=true,etcd.persistence.storageClass=longhorn"
+          extraHelmFlags: "-f /home/jenkins/voltha-scale/voltha-values.yaml"
 
       # voltha-2.8 Jobs
       - 'voltha-scale-measurements':