Re-run cargo_embargo to remove duplicate cfgs. am: 52ceddbd16 am: eb0580e0a9

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/mls-rs/+/3084135

Change-Id: I700377ce7220be7bed8a2c76fcc6280585c59c65
Signed-off-by: Automerger Merge Worker <[email protected]>