Merge "Clean up rust_test_host TEST_MAPPING after default update" am: 7d71471018 am: 4ce34f22a2 am: aa6604d91f am: b98f01bfdc

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rand_xorshift/+/1583344

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8e8b9d1cf6ce45b61fe0bcec2d25d675b28d85b5