Revert "[binder] Expose public Rust API at crate top level"

Revert "[libprofcollectd] Fix binder import path"

Revert submission 1797473-binder_rs-public_api

Reason for revert: Build breakage
Reverted Changes:
Ia37ec9d1e:[binder_common] Update binder import path
Ie6b4a40d7:Update Rust binder import paths
Ia9695e549:[keystore2] Fix binder import path
I811426fa7:[binder] Expose public Rust API at crate top level...
I773767a3a:[libprofcollectd] Fix binder import path

Change-Id: Iab6971b6d16922bd985795a383815ed5f48e1cbb