Revert "Hash ICC ID used in the notification tag for voicemail notifications." am: 6f32f84a36 am: cdd8f9d2f9 am: ae6c7fa98d

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

Change-Id: I32a7686393e4f9af8541916ef0cb7aee41245a91