This section was there because we did not document all the
classes in meta/classes. Now that we are I am dumping it.
(From yocto-docs rev: 3c704fcf8b9e6684d40f0df2069c4e17989ad129)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>