conf/bblayers.conf: Remove meta-ruby from meta-openembedded
conf/bblayers.conf: Remove meta-ruby from meta-openembedded

The meta-ruby layer was removed from meta-openembedded [1] because
now is part of oe-core [2].

[1]
http://git.openembedded.org/meta-openembedded/commit/?id=6e7c9636d2
[2]
http://git.openembedded.org/openembedded-core/commit/?id=10fd3b4144

Signed-off-by: Aníbal Limón <4676e39632f2bd46f30a0e877949547c228033d4@linaro.org>

96boards/oe-rpb-manifest