Revert HdfsConfiguration change accidentally made in HDFS-1997.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/hdfs/trunk@1127817 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/java/org/apache/hadoop/hdfs/HdfsConfiguration.java b/src/java/org/apache/hadoop/hdfs/HdfsConfiguration.java
index 33d0535..a944d97 100644
--- a/src/java/org/apache/hadoop/hdfs/HdfsConfiguration.java
+++ b/src/java/org/apache/hadoop/hdfs/HdfsConfiguration.java
@@ -104,6 +104,5 @@
     deprecate("dfs.write.packet.size", DFSConfigKeys.DFS_CLIENT_WRITE_PACKET_SIZE_KEY);
     deprecate("dfs.block.size", DFSConfigKeys.DFS_BLOCK_SIZE_KEY);
     deprecate("dfs.datanode.max.xcievers", DFSConfigKeys.DFS_DATANODE_MAX_RECEIVER_THREADS_KEY);
-    deprecate("io.bytes.per.checksum", DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY);
   }
 }