arm-autonomy: Remove code from master as part of the deprecation plan

The meta-arm-autonomy layer is being deprecated from master, with bug fixes
only being applied to the following branches. Additionally, all support and
maintenance of meta-arm-autonomy will stop as per the schedule below.

    honister: End-of-life scheduled to June 2022
    hardknot: End-of-life scheduled to December 2021
    gatesgarth: End-of-life scheduled to October 2021
    dunfell: End-of-life scheduled to October 2021
    master: End-of-life scheduled to October 2021 and code removed

Issue-Id: SCM-3552
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Change-Id: I3ca58f8c13b1ecb3dbaf0d60f0f52b016292633d
Signed-off-by: Jon Mason <jon.mason@arm.com>

ci/check-layers.yml

@@ -3,11 +3,5 @@ layers:
   - meta-arm-bsp
   - meta-arm-toolchain
   - meta-gem5
-  - meta-arm-autonomy
 dependencies:
   - meta-openembedded/meta-oe
-  - meta-openembedded/meta-networking
-  - meta-openembedded/meta-python
-  - meta-openembedded/meta-filesystems
-  - poky/meta-poky
-  - meta-virtualization

ci/meta-arm-autonomy.yml

@@ -1,10 +0,0 @@
-header:
-  version: 9
-  includes:
-    - meta-openembedded.yml
-    - meta-virtualization.yml
-
-repos:
-  meta-arm:
-    layers:
-      meta-arm-autonomy: