bluez4 was removed from meta-oe 2 years ago.
Simplfy the setup of the two level bluetooth and bluez4/bluez5
distro features by removing the bluez4/bluez5 distro features.
This also removes the no longer required bluetooth class.
(From OE-Core rev: dcf889e93401f7c4de0055d53271eacc3882eccc)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>