make: Don't rustdoc libraries from Rust's stdlib am: a34f1504f6 Original change: https://android-review.googlesource.com/c/trusty/lib/+/3455802 Change-Id: Ib362a2fa3a65776dc51d2c5ff8425d0e8d3dfdce Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>