Remove OPERATOR_NS from Jenkinsfile since not supported yet

Author: tplavcic

Jenkinsfile

@@ -288,7 +288,6 @@ pipeline {
     environment {
         CLOUDSDK_CORE_DISABLE_PROMPTS = 1
         CLEAN_NAMESPACE = 1
-        OPERATOR_NS = 'ps-operator'
         GIT_SHORT_COMMIT = sh(script: 'git rev-parse --short HEAD', , returnStdout: true).trim()
         VERSION = "${env.GIT_BRANCH}-${env.GIT_SHORT_COMMIT}"
         CLUSTER_NAME = sh(script: "echo jen-ps-${env.CHANGE_ID}-${GIT_SHORT_COMMIT}-${env.BUILD_NUMBER} | tr '[:upper:]' '[:lower:]'", , returnStdout: true).trim()