CI: remove ts-smm-gateway for qemuarm64-secureboot-ts

uefi-test is failing on qemuarm64-secureboot with TS enabled with a "Bus
Error".  This regression is caused by the update of QEMU from v8.2.1 to
v9.0.0.  Temporarily disable this test (via disabling ts-smm-gateway) to
get CI green until it can be root caused.

Signed-off-by: Jon Mason <jon.mason@arm.com>

ci/qemuarm64-secureboot-ts.yml

@@ -8,8 +8,9 @@ header:
 local_conf_header:
   trusted_services: |
     TEST_SUITES:append = " trusted_services"
-    # Include TS Crypto, TS Protected Storage, TS Internal Trusted Storage and SMM-Gateway SPs into optee-os image
-    MACHINE_FEATURES:append = " arm-ffa ts-crypto ts-storage ts-its ts-smm-gateway"
+    # Include TS Crypto, TS Protected Storage, and TS Internal Trusted Storage and SPs into optee-os image
+    # FIXME - remove TS SMM Gateway due to QEMU v9.0.0 test failures
+    MACHINE_FEATURES:append = " arm-ffa ts-crypto ts-storage ts-its"
     # Include TS demo/test tools into image
     IMAGE_INSTALL:append = " packagegroup-ts-tests"
     # Include TS PSA Arch tests into image