Lets see if an empty sanitize-ubsan-excludelist is enough these days

...after 50f1498332 "Remove ten year old file that
is unused" removed it completely and thus broke
<https://ci.libreoffice.org/job/lo_ubsan/3808/>.  (And if an empty file turns
out to be enough, we can either remove it completely in a second step, from both
core and lode, or keep it around in case we ever need to add new content into
it.)

Change-Id: Ieedc93de5e98b76e754dcd9393e66ee64fbf42cd
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/198581
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@collabora.com>

sanitize-ubsan-excludelist

@@ -0,0 +1,10 @@
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+# This file is used by the LODE configuration for the ASan/UBSan build, see -fsanitize-blacklist in
+# the lode repo's bin/lode_ubsan_env (and is currently effectively empty).