The macOS headers included do not collide with LibreOffice types, so the
premac/postmac wrappers are unnecessary.
Change-Id: I3671e6af5f84144eab3439eea076192342ad9fa6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/201677
Reviewed-by: Dan Williams <dcbw@libreoffice.org>
Tested-by: Jenkins