Revert "Set salt master url for labs"

This reverts commit 0798bcbf7514c22d41580d689584a49d5526734a.
diff --git a/jenkins/client/job/deploy/lab/mk/init.yml b/jenkins/client/job/deploy/lab/mk/init.yml
index 44b4b3d..bf58f39 100644
--- a/jenkins/client/job/deploy/lab/mk/init.yml
+++ b/jenkins/client/job/deploy/lab/mk/init.yml
@@ -1,7 +1,6 @@
 parameters:
   _param:
     jenkins_deploy_lab_mk_jobs: []
-    jenkins_salt_api_url: "http://${_param:salt_master_host}:6969"
   jenkins:
     client:
       job_template:
@@ -70,7 +69,7 @@
                 default: "salt-qa-credentials"
               SALT_MASTER_URL:
                 type: string
-                default: "${_param:jenkins_salt_api_url}"
+                default: ""
 
               # openstack api
               OPENSTACK_API_URL: