HBASE-28823 Change the LOG field in TableSplit to private

Author: wangxin

hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSplit.java

@@ -38,9 +38,8 @@
  */
 @InterfaceAudience.Public
 public class TableSplit extends InputSplit implements Writable, Comparable<TableSplit> {
-  /** @deprecated LOG variable would be made private. fix in hbase 3.0 */
-  @Deprecated
-  public static final Logger LOG = LoggerFactory.getLogger(TableSplit.class);
+
+  private static final Logger LOG = LoggerFactory.getLogger(TableSplit.class);
 
   // should be < 0 (@see #readFields(DataInput))
   // version 1 supports Scan data member