[CDM] Revoke NLS when all associations are removed.

Bug: 391895151
Test: manual test
Flag: EXEMPT bugfix
(cherry picked from commit a987e9d91a93b5945ac7d6477e6d34cd2715f2ec)
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:f243250a5a1687615f55447de3dca31b397821f1
Merged-In: I09ac1ef07b65e5180d38e8697d4507a113162eb7
Change-Id: I09ac1ef07b65e5180d38e8697d4507a113162eb7
2 files changed