Revert "Correctly checking out patches when needed in the VOLTHA tests"
it's braking the gitPull

This reverts commit 01d596c4a0a1c1df3d5ba88bb77864f16133a90b.

Reason for revert: <INSERT REASONING HERE>

Change-Id: Ic72a9e9e5d74a0eb7d560a7c488d42c3dccba509
diff --git a/jjb/pipeline/voltha-scale-test.groovy b/jjb/pipeline/voltha-scale-test.groovy
index 98571b6..46b0074 100644
--- a/jjb/pipeline/voltha-scale-test.groovy
+++ b/jjb/pipeline/voltha-scale-test.groovy
@@ -108,6 +108,7 @@
           $class: 'GitSCM',
           userRemoteConfigs: [[
             url: "https://gerrit.opencord.org/kind-voltha",
+            refspec: "${kindVolthaChange}"
           ]],
           branches: [[ name: "master", ]],
           extensions: [
@@ -116,10 +117,6 @@
             [$class: 'CloneOption', depth: 0, noTags: false, reference: '', shallow: false],
           ],
         ])
-        sh """
-        cd $WORKSPACE/kind-voltha
-        git fetch https://gerrit.opencord.org/kind-voltha ${gerritRefspec} && git checkout FETCH_HEAD
-        """
       }
     }
     stage('Clone voltha-system-tests') {
@@ -128,6 +125,7 @@
           $class: 'GitSCM',
           userRemoteConfigs: [[
             url: "https://gerrit.opencord.org/voltha-system-tests",
+            refspec: "${volthaSystemTestsChange}"
           ]],
           branches: [[ name: "${release}", ]],
           extensions: [
@@ -136,10 +134,6 @@
             [$class: 'CloneOption', depth: 0, noTags: false, reference: '', shallow: false],
           ],
         ])
-        sh """
-        cd $WORKSPACE/voltha-system-tests
-        git fetch https://gerrit.opencord.org/voltha-system-tests ${volthaSystemTestsChange} && git checkout FETCH_HEAD
-        """
       }
     }
     stage('Deploy common infrastructure') {