ci: remove STATUS commands from upstream tests' Jenkinsfile

These are remnants of a past before GHPRB. At best they create
uncessary noise in the logs, at worst they can interfere with the
default behaviour, so let's just remove them.

Signed-off-by: Nicolas Busseneau <nicolas@isovalent.com>

jenkinsfiles/kubernetes-upstream.Jenkinsfile

@@ -39,7 +39,6 @@ pipeline {
         stage('Checkout') {
             steps {
                 sh 'env'
-                Status("PENDING", "${env.JOB_NAME}")
                 checkout scm
                 sh 'mkdir -p ${PROJ_PATH}'
                 sh 'ls -A | grep -v src | xargs mv -t ${PROJ_PATH}'
@@ -129,11 +128,5 @@ pipeline {
             cleanWs()
             sh '/usr/local/bin/cleanup || true'
         }
-        success {
-            Status("SUCCESS", "$JOB_BASE_NAME")
-        }
-        failure {
-            Status("FAILURE", "$JOB_BASE_NAME")
-        }
     }
 }