Merge pull request #1937 from bettio/remove-unused-file

Remove unused file

Remove valgrind-suppressions.sup.license.

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

Author: bettio