Remove rescoping.

Rescoping was never a very good solution to the problem of supporting
multiple sets of authorizations for a given key material.  For M we're
removing it and in the future a better solution will be provided.

Change-Id: I6f7585274487bd66e4d90e89014af41e9aa30411
(cherry picked from commit 7f10ab99fc63e99252d924b9e0bdfefef5374b40)
2 files changed