remove ubasan-20

Author: grooverdan

constants.py

@@ -184,9 +184,7 @@
     "amd64-debian-12-debug-embedded",
     "amd64-msan-clang-20-debug",
     "amd64-rhel-10",
-    "amd64-ubasan-clang-20",
     "amd64-ubasan-clang-22",
-    "amd64-ubasan-clang-20-debug",
     "amd64-ubasan-clang-22-debug",
     "amd64-ubuntu-2404",
     "ppc64le-centos-stream10",

master-migration/master.cfg

@@ -202,12 +202,6 @@ for builder, image, experimental, workers in [
         False,
         DEFAULT_AMD64_WORKER_POOL,
     ),
-    (
-        "amd64-ubasan-clang-20-debug",
-        "debian12-msan-clang-20",
-        False,
-        DEFAULT_AMD64_WORKER_POOL,
-    ),
     ("amd64-ubasan-clang-22", "debian13-msan-clang-22", True, sg_bbw1),
     ("amd64-ubasan-clang-22-debug", "debian13-msan-clang-22", True, sg_bbw1),
 ]: