minijail: remove C++ implementation

BUG=chromium-os:21946
TESTED_ON=tegra2_kaen
TEST=Adhoc
Run 'FEATURES=test emerge-$board chromeos-minijail' to ensure the minijail
ebuild isn't broken. Since it was already removed from the system by
https://gerrit.chromium.org/gerrit/12757 this change should have no effect if
chromeos-minijail still builds.

Change-Id: Ie6dcc29920d09b95da21891d121e4c8be11567b1
Signed-off-by: Elly Jones <ellyjones@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/12763
Reviewed-by: Will Drewry <wad@chromium.org>
19 files changed