As it causes "unopkg.bin:
/home/tdf/lode/jenkins/workspace/lo_gerrit/Config/linux_clang_dbgutil_64/comphelper/source/misc/threadpool.cxx:96:
comphelper::ThreadPool::~ThreadPool(): Assertion `mbTerminate' failed."
in
<https://ci.libreoffice.org/job/lo_gerrit/8283/Config=linux_clang_dbgutil_64/console>
and also locally. Revert till it's clear if that assert() should be a
SAL_WARN() or unopkg has to be fixed.

This reverts commit 9899ffd2.

Change-Id: I72902f7da410012340aa8231d84c6871a3f7b976