Using master ofAgent images in scale test

Change-Id: I311ada965f4b600965d172776ab9904f37fddce2
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index 0e8b33a..a1a94de 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -96,7 +96,6 @@
           onosReplicas: 3
           atomixReplicas: 3
           extraHelmFlags: '--set defaults.rw_core.timeout=30s '
-          ofAgentImg: andreacampanella/voltha-ofagent-go:lower-number-flows
 
       - 'voltha-scale-measurements':
           name: 'voltha-scale-measurements-master-1-16-32-tt-subscribers'
@@ -115,7 +114,6 @@
           onosReplicas: 3
           atomixReplicas: 3
           extraHelmFlags: '--set defaults.rw_core.timeout=30s '
-          ofAgentImg: andreacampanella/voltha-ofagent-go:lower-number-flows
 
       # jobs for DT with 512 ONUs with a 8 openonu-adapters and clustered ONOS.
       - 'voltha-scale-measurements':