set#57 revert Jenkinsfile

ci/Jenkinsfile

-String branchName = env.BRANCH_NAME.replaceAll('/', '%252F')
 pipeline {
   agent {
     kubernetes {
@@ -16,27 +15,6 @@ pipeline {
   }
 
   stages {
-    stage('Update Branch Target') {
-      when {
-        expression { 
-          return BRANCH_NAME != 'main' 
-        }
-      }
-
-      steps {
-          script { 
-          def lastSuccessfulBuildPath = "https://ci.eclipse.org/set/job/Model/job/${branchName}/lastSuccessfulBuild/artifact/java/bundles/org.eclipse.set.model.releng.repository/target/org.eclipse.set.model.repository-2.1.0-SNAPSHOT.zip"
-          downloadFile file: 'org.eclipse.set.model.repository-2.1.0-SNAPSHOT.zip', url: "${lastSuccessfulBuildPath}"
-          
-          if (fileExists('org.eclipse.set.model.repository-2.1.0-SNAPSHOT.zip')) {
-            sh "sed -i 's|https://download.eclipse.org/set/nightly/main/p2/model/|jar:file:///${WORKSPACE}/org.eclipse.set.model.repository-2.1.0-SNAPSHOT.zip!|g' java/bundles/org.eclipse.set.toolboxmodel.releng.target/org.eclipse.set.toolboxmodel.releng.target.target"
-          }
-        }
-        
-        
-      }
-    }
-
     stage('Build') {
       steps {
         container('maven') {