Revert "Hash ICC ID used in the notification tag for voicemail notifications." am: 6f32f84a36 am: cdd8f9d2f9 am: ae6c7fa98d am: 272c1b917d am: ecf149527f am: 76282c26cb am: c519862167 am: 00a990b265

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Dialer/+/16222616

Change-Id: I33fb8a4bba12e7d946baaea5f2a7f8399b863b96