Revert "subtree updates"

Needs to go through CI

This reverts commit fc7e7973f3119e2bad511209aa336537dc5ffbed.
diff --git a/meta-arm/ci/corstone500.yml b/meta-arm/ci/corstone500.yml
new file mode 100644
index 0000000..2172bc1
--- /dev/null
+++ b/meta-arm/ci/corstone500.yml
@@ -0,0 +1,12 @@
+header:
+  version: 14
+  includes:
+    - ci/base.yml
+    - ci/fvp.yml
+    - ci/poky-tiny.yml
+
+local_conf_header:
+  fvp-config: |
+    IMAGE_FEATURES:remove = " ssh-server-dropbear"
+
+machine: corstone500
diff --git a/meta-arm/ci/fvps.yml b/meta-arm/ci/fvps.yml
index 1bced29..cf4103e 100644
--- a/meta-arm/ci/fvps.yml
+++ b/meta-arm/ci/fvps.yml
@@ -15,6 +15,7 @@
 
 target:
   - nativesdk-fvp-base-a-aem
+  - nativesdk-fvp-corstone500
   - nativesdk-fvp-corstone1000
   - nativesdk-fvp-n1-edge
   - nativesdk-fvp-sgi575
diff --git a/meta-arm/ci/jobs-to-kas b/meta-arm/ci/jobs-to-kas
index eea6e46..b8615a5 100755
--- a/meta-arm/ci/jobs-to-kas
+++ b/meta-arm/ci/jobs-to-kas
@@ -3,7 +3,7 @@
 # This script is expecting an input of machine name, optionally followed by a
 # colon and a list of one or more parameters separated by commas between
 # brackets.  For example, the following are acceptable:
-# corstone1000-mps3
+# corstone500
 # fvp-base: [testimage]
 # qemuarm64-secureboot: [clang, glibc, testimage]
 #
diff --git a/meta-arm/ci/n1sdp-optee.yml b/meta-arm/ci/n1sdp-optee.yml
deleted file mode 100644
index f2b50ab..0000000
--- a/meta-arm/ci/n1sdp-optee.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-header:
-  version: 14
-
-# Config specific for the optee-xtests
-local_conf_header:
-  optee-test: |
-    # Include ARM FFA
-    MACHINE_FEATURES:append = " arm-ffa"
-    # Include trusted services
-    TEST_SUITES:append = " trusted_services"
-    # Include Optee xtests
-    IMAGE_INSTALL:append = " optee-test"