meta-ohos-demo: Remove obsolete layer

This was part of a deprecation process when the demo layer was renamed
to blueprints. We can remove it now as this was done a fair amount of
time ago.

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

meta-ohos-core/classes/oniro-sanity.bbclass

@@ -8,7 +8,6 @@
 # <REPLACEMENT_COLLECTION> is not provided, the layer was removed without a
 # replacement.
 ONIRO_DEPRECATED_COLLECTIONS = " \
-    meta-ohos-demo:meta-ohos-blueprints \
     "
 
 # Same format as for ONIRO_DEPRECATED_COLLECTIONS but for DISTRO configurations.

meta-ohos-demo/conf/layer.conf

-# SPDX-FileCopyrightText: Huawei Inc.
-#
-# SPDX-License-Identifier: Apache-2.0
-
-# This layer was deprecated in favour of meta-ohos-blueprints. This is a
-# compatible layer to not break existing bblayers.conf.
-BBPATH .= ":${LAYERDIR}/../meta-ohos-blueprints"
-
-# We have recipes-* directories, add to BBFILES
-BBFILES += "${LAYERDIR}/../meta-ohos-blueprints/recipes-*/*/*.bb \
-            ${LAYERDIR}/../meta-ohos-blueprints/recipes-*/*/*.bbappend"
-
-BBFILE_COLLECTIONS += "meta-ohos-demo"
-BBFILE_PATTERN_meta-ohos-demo = "^${LAYERDIR}/../meta-ohos-blueprints"
-BBFILE_PRIORITY_meta-ohos-demo = "6"
-
-LAYERDEPENDS_meta-ohos-demo = "core"
-LAYERSERIES_COMPAT_meta-ohos-demo = "dunfell"