Reverting previous commit which added 2.9.0 entries. Don't need that in branch-2.8.

Revert "Adding release 2.8.0 to CHANGES.txt"

This reverts commit 767815f3176c4776ea828994a662404df303f890.

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -1,17 +1,5 @@
 Hadoop Change Log
 
-Release 2.9.0 - UNRELEASED
-
-  INCOMPATIBLE CHANGES
-
-  NEW FEATURES
-
-  IMPROVEMENTS
-
-  OPTIMIZATIONS
-
-  BUG FIXES
-
 Release 2.8.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -1,17 +1,5 @@
  Hadoop HDFS Change Log
 
-Release 2.9.0 - UNRELEASED
-
-  INCOMPATIBLE CHANGES
-
-  NEW FEATURES
-
-  IMPROVEMENTS
-
-  OPTIMIZATIONS
-
-  BUG FIXES
-
 Release 2.8.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/CHANGES.txt

@@ -1,17 +1,5 @@
 Hadoop MapReduce Change Log
 
-Release 2.9.0 - UNRELEASED
-
-  INCOMPATIBLE CHANGES
-
-  NEW FEATURES
-
-  IMPROVEMENTS
-
-  OPTIMIZATIONS
-
-  BUG FIXES
-
 Release 2.8.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/CHANGES.txt

@@ -1,17 +1,5 @@
 Hadoop YARN Change Log
 
-Release 2.9.0 - UNRELEASED
-
-  INCOMPATIBLE CHANGES
-
-  NEW FEATURES
-
-  IMPROVEMENTS
-
-  OPTIMIZATIONS
-
-  BUG FIXES
-
 Release 2.8.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES