oniro.inc: Remove BBMASK workaround for blueprints

This was done to isolate the blueprints layer unless a blueprint distro
is selected/ Now that the blueprints layer is not included by default in
the layers, we can drop this.

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

meta-oniro-core/conf/distro/include/oniro.inc

@@ -4,13 +4,6 @@
 
 INHERIT += "oniro-sanity"
 
-# With our layer setup we would add any bbappend found from our
-# layers.conf. This means blueprint-specific appends would leak
-# into the package in our main distribution. To avoid this we
-# mask out the blueprint layers in the main distro and unmask
-# them only the blueprint distributions.
-BBMASK += "oniro/meta-oniro-blueprints/"
-
 # Default versions of toolchain components
 # (can be overridden in kernel specific files if necessary)
 BINUVERSION ?= "2.37%"