Building IMSI support for encryption.

Provide ability to delete keys from the database. Will be used when
network is reset.
BUG: 35606429
Test: manual

Change-Id: I8a6c01c383396cb5dda0a45fbdf1ca88ee2b8fcb
(cherry picked from commit 65b8cc3ff023f6b98e47eff5ccccf04f5da727cf)
1 file changed