Clean up APIs before declaring API 28.

As part of finalizing an SDK, we need to ensure that no new APIs are
marked @Deprecated, since they're typically cleanup that someone
forgot to finish.

Someone forgot to replace Slice.getTimestamp() with Slice.getLong().

Bug: 77588754
Test: builds, boots
Change-Id: I80e76f7f5e98559c099d5c8ea8a1eafcf6b8520f
Exempt-From-Owner-Approval: SDK finalization
5 files changed