Do not keep runtime invisible annotations in proguard.flags am: b0f8c82e37 am: 817de4cf62

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Messaging/+/3455602

Change-Id: I874a545cfde2310b4714879d1d001c3c4f47737d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>