Fix build failure after merge

Author: abh1sar

engine/schema/src/main/java/org/apache/cloudstack/backup/BackupVO.java

@@ -264,9 +264,4 @@ public Date getRemoved() {
     public void setRemoved(Date removed) {
         this.removed = removed;
     }
-
-    @Override
-    public String toString() {
-        return String.format("Backup is %s", ReflectionToStringBuilderUtils.reflectOnlySelectedFields(this, "id", "uuid", "external_id", "date"));
-    }
 }