Revert "APIs for reviewing, listing volumes, hashes."

This reverts commit b7634f49.

Reason for revert: docs build was broken https://android-build.googleplex.com/builds/submitted/5104251/sdk_phone_armv7-sdk/latest/view/logs/build_error.log

Bug: 111268862
Change-Id: I95967186def8a3c81e7a2e0e2915d4280cd78af4