HDFS-14003. Fix findbugs warning in trunk for FSImageFormatPBINode. Contributed by Yiqun Lin.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java

@@ -660,7 +660,6 @@ public final class FSImageFormatPBINode {
     }
 
     private void save(OutputStream out, INodeSymlink n) throws IOException {
-      SaverContext state = parent.getSaverContext();
       INodeSection.INodeSymlink.Builder b = INodeSection.INodeSymlink
           .newBuilder()
           .setPermission(buildPermissionStatus(n))