no-spdx: remove more tasks

as we apparently can't disable spdx creation through the new
nospdx class, we are migrating over the task deletes from
there to our class, which can be inherited globally

classes/no-spdx.bbclass

@@ -0,0 +1,17 @@
+## SPDX-License-Identifier: BSD-2-Clause
+## Copyright (c) 2023, Konrad Weihmann
+
+# This disables creating expensive SBOMs
+# which just consume space and don't serve
+# any purpose for our test distro
+
+do_create_spdx_setscene[noexec] = "1"
+deltask do_collect_spdx_deps
+deltask do_create_spdx
+deltask do_create_spdx_runtime
+deltask do_create_package_spdx
+deltask do_create_rootfs_spdx
+deltask do_create_image_spdx
+deltask do_create_image_sbom
+
+ROOTFS_POSTUNINSTALL_COMMAND:remove = "image_combine_spdx"

conf/distro/scatest.conf

@@ -39,4 +39,4 @@ INHERIT += "rm_work"
 INHERIT += "no-native-pycache"
 
 # Disable SPDX
-INHERIT += "nospdx"
+INHERIT += "no-spdx"