Revert "Phone: Display Supplementary Service Notifications"

This reverts commit d27d964e41bd33059baecc7312b7180f25c81a7c and
restores our own SSN handling.

Change-Id: Ib61a3e94599f684e414e98969712aaa285714b79
Merge "Revert "Phone: Display Supplementary Service Notifications"" into cm-10.2