bblayers.conf.sample: Drop the blueprints layer

Blueprints will have a new home:
https://booting.oniroproject.org/distro/meta-oniro-blueprints



Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

flavours/linux/bblayers.conf.sample

@@ -16,7 +16,6 @@ BBLAYERS ?= " \
   ##OEROOT##/../meta-zephyr \
   ##OEROOT##/../meta-zephyr-bsp \
   ##OEROOT##/../oniro/meta-oniro-core \
-  ##OEROOT##/../oniro/meta-oniro-blueprints \
   ##OEROOT##/../meta-freertos \
   ##OEROOT##/../meta-intel \
   ##OEROOT##/../meta-seco-intel \