Revert^2 "add crate_root property to rust modules" am: 60375c4a am:...

Revert^2 "add crate_root property to rust modules" am: 60375c4a am: 73f5aae5 am: 1aeb848c am: 6c84d29f

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2746467



Change-Id: I55c5775eeb9be2462321ed7b7569ccbdb753d67d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>