HDFS-10869. Remove the unused method InodeId#checkId(). Contributed by Jagadesh Kiran N

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

@@ -17,10 +17,7 @@
  */
 package org.apache.hadoop.hdfs.server.namenode;
 
-import java.io.FileNotFoundException;
-
 import org.apache.hadoop.classification.InterfaceAudience;
-import org.apache.hadoop.hdfs.protocol.HdfsConstants;
 import org.apache.hadoop.util.SequentialNumber;
 
 /**
@@ -39,19 +36,6 @@ public class INodeId extends SequentialNumber {
   public static final long ROOT_INODE_ID = LAST_RESERVED_ID + 1;
   public static final long INVALID_INODE_ID = -1;
 
-  /**
-   * To check if the request id is the same as saved id. Don't check fileId
-   * with GRANDFATHER_INODE_ID for backward compatibility.
-   */
-  public static void checkId(long requestId, INode inode)
-      throws FileNotFoundException {
-    if (requestId != HdfsConstants.GRANDFATHER_INODE_ID && requestId != inode.getId()) {
-      throw new FileNotFoundException(
-          "ID mismatch. Request id and saved id: " + requestId + " , "
-              + inode.getId() + " for file " + inode.getFullPathName());
-    }
-  }
-  
   INodeId() {
     super(ROOT_INODE_ID);
   }