Remove old configuration and use new config for MMTEL/RCS

Remove the old config_ims_package device config and configure the
new MMTEL and RCS configurations in Telephony instead. Also,
configure the RcsService to be the default RCS service.

Bug: 111305845
Test: make checkbuild; manual test
Change-Id: I6a8f58bcc7e95c035725fc37a77b825b4ddced4b
2 files changed