openldap: Add inherit preserve-libs to fix bug.

Upstream pull request:
https://github.com/gentoo/gentoo/pull/17259

Also drop an unused patch.

BUG=chromium:1117585
TEST=CQ passes

Change-Id: Ibb8858517a1c1450c1944cf50f2addca2a25d4c1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2375804
Tested-by: Allen Webb <allenwebb@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed