Revert "mkosi: extend DefaultTimeoutStopSec= when running on sanitizers"

This reverts commit b75befc3c9.

Unfortunately, it does not work. Let's revert.

mkosi.sanitizers/mkosi.extra/etc/systemd/system.conf.d/10-default-timeout.conf

@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: LGPL-2.1-or-later
-
-[Manager]
-# Sanitizers may make exit() extremely slower.
-# Let's extend the timeout. See issue #35335.
-DefaultTimeoutStopSec=2min

test/TEST-73-LOCALE/meson.build

@@ -4,5 +4,7 @@ integration_tests += [
         integration_test_template + {
                 'name' : fs.name(meson.current_source_dir()),
                 'priority' : 10,
+                # TODO: Remove when https://github.com/systemd/systemd/issues/35335 is fixed.
+                'coredump-exclude-regex' : '/systemd-localed',
         },
 ]