[DO NOT MERGE] Revert "Handle cell broadcasts with new module"

This reverts commit 746c1576244ef575c5a307b6fcebf69648ad5ae4.

Reason for revert: depends on ag/9477322 being CP'd, or else causes breakages downstream (b/142399383)

Change-Id: I72c98e7dbfd15df1c9aaa716ee126eede234a03d
5 files changed