Release notes are version independent, so remove version/release values.
We've found that most projects now require the service package to be
installed in order to build release notes, and this is entirely due to
the current convention of pulling in the version information.
Release notes should not need installation in order to build, so this
unnecessary version setting needs to be removed.
Change-Id: I9b631dbedd1b2c8bfe7430943dfc16e85b9f85e0
46144c4a27