Remove legacy testing for platforms that have os-release files
Remove legacy testing for platforms that have os-release files

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

jaymzh/ohai,higanworks/ohai,mattray/ohai,mattray/ohai,higanworks/ohai,chef/ohai,jaymzh/ohai,chef/ohai