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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3cba40220c03b8e59bf1bb6ce8a929413c8ea3df