Revert "Upgrade fastrand to 2.0.0" am: 8a27650cbe

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/fastrand/+/2745833

Change-Id: I3362a487d5941a6923dd6b3298d8e9d4773e5cc0
Signed-off-by: Automerger Merge Worker <[email protected]>