Revert "Introduce safer type castings for cb_handle_t"

This reverts commit afea830df6bc04e66e9757cb1ee0842d871af76b.

Reason for revert: https://android-build.googleplex.com/builds/branch-dashboard/aosp-emu-master-dev?build_id=5900549

Change-Id: Id5aafbb46d7510ea40c681c9e394a6c1dcb31ba7
5 files changed