fix clean method

Jenkinsfile

@@ -309,13 +309,13 @@ def cleanup(def DEPLOY_FILE, def BACKUP_FILE){
 }
 
 //clean and update the local deploy file
-def clean(def DEPLOY_FILE){
+def clean(def file){
     sh '''
-        echo "cleanup $DEPLOY_FILE";
-        if [ -f ${DEPLOY_FILE} ]; then
-                rm ${DEPLOY_FILE};
+        echo "cleaning $file";
+        if [ -f ${file} ]; then
+                rm ${file};
         else
-            echo "deploy file empty"
+            echo "file not exist"
         fi
     '''
 }