Revert "Updating releasenotes.html"

This reverts commit 12b73ad69739dac5e332294c1179faae494220ef.

The releasenotes prepare script goes wild.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.0.6-alpha@1512849 13f79535-47bb-0310-9956-ffa450edef68