disable check if file exist in jenkins pipeline

Former-commit-id: 4a0e0e35bebe149d769e42ee3acf9d40342160b4

ci/jenkins/jenkinsfile/package.groovy

 timeout(time: 5, unit: 'MINUTES') {
-    if (fileExists('/opt/milvus')) {
-        sh "tar -zcvf ./${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz -C /opt/ milvus"
-        withCredentials([usernamePassword(credentialsId: "${params.JFROG_CREDENTIALS_ID}", usernameVariable: 'JFROG_USERNAME', passwordVariable: 'JFROG_PASSWORD')]) {
-            def uploadStatus = sh(returnStatus: true, script: "curl -u${JFROG_USERNAME}:${JFROG_PASSWORD} -T ./${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz ${params.JFROG_ARTFACTORY_URL}/milvus/package/${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz")
-            if (uploadStatus != 0) {
-                error("\" ${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz \" upload to \" ${params.JFROG_ARTFACTORY_URL}/milvus/package/${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz \" failed!")
-            }
+    sh "tar -zcvf ./${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz -C /opt/ milvus"
+    withCredentials([usernamePassword(credentialsId: "${params.JFROG_CREDENTIALS_ID}", usernameVariable: 'JFROG_USERNAME', passwordVariable: 'JFROG_PASSWORD')]) {
+        def uploadStatus = sh(returnStatus: true, script: "curl -u${JFROG_USERNAME}:${JFROG_PASSWORD} -T ./${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz ${params.JFROG_ARTFACTORY_URL}/milvus/package/${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz")
+        if (uploadStatus != 0) {
+            error("\" ${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz \" upload to \" ${params.JFROG_ARTFACTORY_URL}/milvus/package/${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz \" failed!")
         }
-    } else {
-        error("Milvus binary directory don't exists!")
     }
 }