Revert "Upgrade fastrand to 2.0.1" am: a329b7310b

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/fastrand/+/2956009

Change-Id: I24a8ab2f46245126c10ae645f43df4732a8a8222
Signed-off-by: Automerger Merge Worker <[email protected]>