Revert "libsnapshot: Implement OnlineKernelSnapshotWriter::OpenReader."

This reverts commit 39f250896a9ae991a6e80a4231954fbae8a8d125.

Reason for revert: b/169981170, update crash for droidfooders.

Change-Id: I6a3d096df3174596d36195bf59fa8fbc88c982d0
5 files changed