Migrated message duplicate detection to cell broadcast service

The duplicate detection logic is now moved to
the new cell broadcast service so all clients
can benefit from this. Also added multi-sim
duplicate detection check because now cell
broadcast messages are enabled on all subs.

Test: Manual
Bug: 143177972

Change-Id: I6bbe8e938846d07b1260eb83e532b7f46aeabeaf
1 file changed