restore jenkinsfile

jenkins/Jenkinsfile

@@ -16,9 +16,7 @@ pipeline {
                 }
                 stage('Test') {
                         steps {
-                                withEnv(["GOROOT=${root}", "PATH+GO=${root}/bin"]) {
-                                        sh 'go test -v ./...'
-                                }
+                                sh 'go test -v ./...'
                         }
                 }
         }