This reverts commit c4113906d7f15f8aa0eb385a4caf474b3505ede1, which is not
necessary after all with recent "Hook SourceProvider into unoidl::loadProvider."
see https://gerrit.libreoffice.org/#/c/3367/
and Change-Id: I00c96fa77d04b33a6f8c8cd3490dfcd9bdc9e84a for details
Change-Id: I199a75bc4042af20817265d5ef85b1134a96ff5a